cargo fmt

src/fragments/address.rs

@@ -1,18 +1,18 @@
 use nom::{
-    IResult,
     branch::alt,
     bytes::complete::tag,
     combinator::{into, opt},
     multi::separated_list1,
     sequence::tuple,
+    IResult,
 };
 
+use crate::error::IMFError;
 use crate::fragments::lazy;
-use crate::fragments::model::{GroupRef, AddressRef, MailboxRef, MailboxList, AddressList};
 use crate::fragments::mailbox::mailbox;
 use crate::fragments::misc_token::phrase;
-use crate::fragments::whitespace::{cfws};
+use crate::fragments::model::{AddressList, AddressRef, GroupRef, MailboxList, MailboxRef};
-use crate::error::IMFError;
+use crate::fragments::whitespace::cfws;
 
 impl<'a> TryFrom<&'a lazy::Mailbox<'a>> for MailboxRef {
     type Error = IMFError<'a>;
@@ -73,10 +73,13 @@ pub fn group(input: &str) -> IResult<&str, GroupRef> {
     let (input, (grp_name, _, grp_list, _, _)) =
         tuple((phrase, tag(":"), opt(group_list), tag(";"), opt(cfws)))(input)?;
 
-    Ok((input, GroupRef {
+    Ok((
+        input,
+        GroupRef {
             name: grp_name,
             participants: grp_list.unwrap_or(vec![]),
-    }))
+        },
+    ))
 }
 
 /// Group list
@@ -128,7 +131,9 @@ mod tests {
             _ => panic!(),
         };
 
-        match mailbox_list(r#"Mary Smith <mary@x.test>, jdoe@example.org, Who? <one@y.test>, <boss@nil.test>, "Giant; \"Big\" Box" <sysservices@example.net>"#) {
+        match mailbox_list(
+            r#"Mary Smith <mary@x.test>, jdoe@example.org, Who? <one@y.test>, <boss@nil.test>, "Giant; \"Big\" Box" <sysservices@example.net>"#,
+        ) {
             Ok(("", _)) => (),
             _ => panic!(),
         };
@@ -137,30 +142,47 @@ mod tests {
     #[test]
     fn test_address_list() {
         assert_eq!(
-            address_list(r#"A Group:Ed Jones <c@a.test>,joe@where.test,John <jdoe@one.test>;, Mary Smith <mary@x.test>"#),
+            address_list(
-            Ok(("", vec![
+                r#"A Group:Ed Jones <c@a.test>,joe@where.test,John <jdoe@one.test>;, Mary Smith <mary@x.test>"#
+            ),
+            Ok((
+                "",
+                vec![
                     AddressRef::Many(GroupRef {
                         name: "A Group".to_string(),
                         participants: vec![
                             MailboxRef {
                                 name: Some("Ed Jones".into()),
-                            addrspec: AddrSpec { local_part: "c".into(), domain: "a.test".into() },
+                                addrspec: AddrSpec {
+                                    local_part: "c".into(),
+                                    domain: "a.test".into()
+                                },
                             },
                             MailboxRef {
                                 name: None,
-                            addrspec: AddrSpec { local_part: "joe".into(), domain: "where.test".into() },
+                                addrspec: AddrSpec {
+                                    local_part: "joe".into(),
+                                    domain: "where.test".into()
+                                },
                             },
                             MailboxRef {
                                 name: Some("John".into()),
-                            addrspec: AddrSpec { local_part: "jdoe".into(), domain: "one.test".into() },
+                                addrspec: AddrSpec {
+                                    local_part: "jdoe".into(),
+                                    domain: "one.test".into()
+                                },
                             },
                         ],
                     }),
                     AddressRef::Single(MailboxRef {
                         name: Some("Mary Smith".into()),
-                    addrspec: AddrSpec { local_part: "mary".into(), domain: "x.test".into() },
+                        addrspec: AddrSpec {
+                            local_part: "mary".into(),
+                            domain: "x.test".into()
+                        },
                     }),
-            ]))
+                ]
+            ))
         );
     }
 }

src/fragments/datetime.rs

@@ -1,16 +1,16 @@
+use crate::error::IMFError;
+use crate::fragments::lazy;
+use crate::fragments::whitespace::{cfws, fws};
 use chrono::{DateTime, FixedOffset, NaiveDate, NaiveTime};
 use nom::{
-    IResult,
     branch::alt,
-    bytes::complete::{tag, tag_no_case, take_while_m_n, is_a},
+    bytes::complete::{is_a, tag, tag_no_case, take_while_m_n},
     character,
-    character::complete::{one_of, alphanumeric1, digit0},
+    character::complete::{alphanumeric1, digit0, one_of},
     combinator::{map, opt, value},
-    sequence::{preceded, terminated, tuple, delimited },
+    sequence::{delimited, preceded, terminated, tuple},
+    IResult,
 };
-use crate::fragments::lazy;
-use crate::fragments::whitespace::{fws, cfws};
-use crate::error::IMFError;
 
 const MIN: i32 = 60;
 const HOUR: i32 = 60 * MIN;
@@ -43,20 +43,31 @@ impl<'a> TryFrom<&'a lazy::DateTime<'a>> for DateTime<FixedOffset> {
 /// due to an error in RFC0822 but are interpreted as their respective
 /// timezone according to the RFC5322 definition
 pub fn section(input: &str) -> IResult<&str, Option<DateTime<FixedOffset>>> {
-    map(terminated(
+    map(
+        terminated(
             alt((
-                tuple((opt(terminated(strict_day_of_week, tag(","))), strict_date, strict_time_of_day, strict_zone )),
+                tuple((
-                tuple((opt(terminated(obs_day_of_week, tag(","))), obs_date, obs_time_of_day, alt((strict_zone, obs_zone)) )),
+                    opt(terminated(strict_day_of_week, tag(","))),
+                    strict_date,
+                    strict_time_of_day,
+                    strict_zone,
                 )),
-            opt(cfws)
+                tuple((
-        ), |res| {
+                    opt(terminated(obs_day_of_week, tag(","))),
-            match res {
+                    obs_date,
+                    obs_time_of_day,
+                    alt((strict_zone, obs_zone)),
+                )),
+            )),
+            opt(cfws),
+        ),
+        |res| match res {
             (_, Some(date), Some(time), Some(tz)) => {
                 date.and_time(time).and_local_timezone(tz).earliest()
-                },
-                _ => None,
             }
-        })(input)
+            _ => None,
+        },
+    )(input)
 }
 
 ///    day-of-week     =   ([FWS] day-name) / obs-day-of-week
@@ -85,18 +96,16 @@ fn day_name(input: &str) -> IResult<&str, &str> {
 
 ///    date            =   day month year
 fn strict_date(input: &str) -> IResult<&str, Option<NaiveDate>> {
-   map(
+    map(tuple((strict_day, month, strict_year)), |(d, m, y)| {
-       tuple((strict_day, month, strict_year)),
+        NaiveDate::from_ymd_opt(y, m, d)
-       |(d, m, y)| NaiveDate::from_ymd_opt(y, m, d)
+    })(input)
-    )(input)
 }
 
 ///    date            =   day month year
 fn obs_date(input: &str) -> IResult<&str, Option<NaiveDate>> {
-   map(
+    map(tuple((obs_day, month, obs_year)), |(d, m, y)| {
-       tuple((obs_day, month, obs_year)),
+        NaiveDate::from_ymd_opt(y, m, d)
-       |(d, m, y)| NaiveDate::from_ymd_opt(y, m, d)
+    })(input)
-    )(input)
 }
 
 ///    day             =   ([FWS] 1*2DIGIT FWS) / obs-day
@@ -135,18 +144,21 @@ fn strict_year(input: &str) -> IResult<&str, i32> {
         fws,
         map(
             terminated(take_while_m_n(4, 9, |c| c >= '\x30' && c <= '\x39'), digit0),
-            |d: &str| d.parse::<i32>().unwrap()), 
+            |d: &str| d.parse::<i32>().unwrap(),
+        ),
         fws,
     )(input)
 }
 
 ///   obs-year        =   [CFWS] 2*DIGIT [CFWS]
 fn obs_year(input: &str) -> IResult<&str, i32> {
-    map(delimited(
+    map(
+        delimited(
             opt(cfws),
             terminated(take_while_m_n(2, 7, |c| c >= '\x30' && c <= '\x39'), digit0),
-        opt(cfws)
+            opt(cfws),
-    ), |cap: &str| {
+        ),
+        |cap: &str| {
             let d = cap.parse::<i32>().unwrap();
             if d >= 0 && d <= 49 {
                 2000 + d
@@ -155,22 +167,37 @@ fn obs_year(input: &str) -> IResult<&str, i32> {
             } else {
                 d
             }
-    })(input)
+        },
+    )(input)
 }
 
 ///   time-of-day     =   hour ":" minute [ ":" second ]
 fn strict_time_of_day(input: &str) -> IResult<&str, Option<NaiveTime>> {
     map(
-        tuple((strict_time_digit, tag(":"), strict_time_digit, opt(preceded(tag(":"), strict_time_digit)))),
+        tuple((
-        |(hour, _, minute, maybe_sec)| NaiveTime::from_hms_opt(hour, minute, maybe_sec.unwrap_or(0)),
+            strict_time_digit,
+            tag(":"),
+            strict_time_digit,
+            opt(preceded(tag(":"), strict_time_digit)),
+        )),
+        |(hour, _, minute, maybe_sec)| {
+            NaiveTime::from_hms_opt(hour, minute, maybe_sec.unwrap_or(0))
+        },
     )(input)
 }
 
 ///   time-of-day     =   hour ":" minute [ ":" second ]
 fn obs_time_of_day(input: &str) -> IResult<&str, Option<NaiveTime>> {
     map(
-        tuple((obs_time_digit, tag(":"), obs_time_digit, opt(preceded(tag(":"), obs_time_digit)))),
+        tuple((
-        |(hour, _, minute, maybe_sec)| NaiveTime::from_hms_opt(hour, minute, maybe_sec.unwrap_or(0)),
+            obs_time_digit,
+            tag(":"),
+            obs_time_digit,
+            opt(preceded(tag(":"), obs_time_digit)),
+        )),
+        |(hour, _, minute, maybe_sec)| {
+            NaiveTime::from_hms_opt(hour, minute, maybe_sec.unwrap_or(0))
+        },
     )(input)
 }
 
@@ -189,15 +216,21 @@ fn obs_time_digit(input: &str) -> IResult<&str, u32> {
 /// ```
 fn strict_zone(input: &str) -> IResult<&str, Option<FixedOffset>> {
     map(
-        tuple((opt(fws), is_a("+-"), take_while_m_n(2,2,|c| c >= '\x30' && c <= '\x39'), take_while_m_n(2,2,|c| c >= '\x30' && c <= '\x39'))),
+        tuple((
+            opt(fws),
+            is_a("+-"),
+            take_while_m_n(2, 2, |c| c >= '\x30' && c <= '\x39'),
+            take_while_m_n(2, 2, |c| c >= '\x30' && c <= '\x39'),
+        )),
         |(_, op, dig_zone_hour, dig_zone_min)| {
             let zone_hour = dig_zone_hour.parse::<i32>().unwrap() * HOUR;
             let zone_min = dig_zone_min.parse::<i32>().unwrap() * MIN;
             match op {
                 "+" => FixedOffset::east_opt(zone_hour + zone_min),
                 "-" => FixedOffset::west_opt(zone_hour + zone_min),
-                _ => unreachable!(),             }
+                _ => unreachable!(),
             }
+        },
     )(input)
 }
 
@@ -227,18 +260,27 @@ fn obs_zone(input: &str) -> IResult<&str, Option<FixedOffset>> {
         opt(fws),
         alt((
             // Legacy UTC/GMT
-            value(FixedOffset::west_opt(0 * HOUR), alt((tag("UTC"), tag("UT"), tag("GMT")))),
+            value(
-
+                FixedOffset::west_opt(0 * HOUR),
+                alt((tag("UTC"), tag("UT"), tag("GMT"))),
+            ),
             // USA Timezones
             value(FixedOffset::west_opt(4 * HOUR), tag("EDT")),
-            value(FixedOffset::west_opt(5 * HOUR), alt((tag("EST"), tag("CDT")))),
+            value(
-            value(FixedOffset::west_opt(6 * HOUR), alt((tag("CST"), tag("MDT")))),
+                FixedOffset::west_opt(5 * HOUR),
-            value(FixedOffset::west_opt(7 * HOUR), alt((tag("MST"), tag("PDT")))),
+                alt((tag("EST"), tag("CDT"))),
+            ),
+            value(
+                FixedOffset::west_opt(6 * HOUR),
+                alt((tag("CST"), tag("MDT"))),
+            ),
+            value(
+                FixedOffset::west_opt(7 * HOUR),
+                alt((tag("MST"), tag("PDT"))),
+            ),
             value(FixedOffset::west_opt(8 * HOUR), tag("PST")),
-
             // Military Timezone UTC
             value(FixedOffset::west_opt(0 * HOUR), tag("Z")),
-
             // Military Timezones East
             map(one_of("ABCDEFGHIKLMabcdefghiklm"), |c| match c {
                 'A' | 'a' => FixedOffset::east_opt(1 * HOUR),
@@ -255,7 +297,6 @@ fn obs_zone(input: &str) -> IResult<&str, Option<FixedOffset>> {
                 'M' | 'm' => FixedOffset::east_opt(12 * HOUR),
                 _ => unreachable!(),
             }),
-
             // Military Timezones West
             map(one_of("nopqrstuvwxyNOPQRSTUVWXY"), |c| match c {
                 'N' | 'n' => FixedOffset::west_opt(1 * HOUR),
@@ -272,7 +313,6 @@ fn obs_zone(input: &str) -> IResult<&str, Option<FixedOffset>> {
                 'Y' | 'y' => FixedOffset::west_opt(12 * HOUR),
                 _ => unreachable!(),
             }),
-
             // Unknown timezone
             value(FixedOffset::west_opt(0 * HOUR), alphanumeric1),
         )),
@@ -284,12 +324,19 @@ mod tests {
     use super::*;
     use chrono::TimeZone;
 
-    
     #[test]
     fn test_section_rfc_strict() {
         assert_eq!(
             section("Fri, 21 Nov 1997 09:55:06 -0600"),
-            Ok(("", Some(FixedOffset::west_opt(6 * HOUR).unwrap().with_ymd_and_hms(1997, 11, 21, 9, 55, 6).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::west_opt(6 * HOUR)
+                        .unwrap()
+                        .with_ymd_and_hms(1997, 11, 21, 9, 55, 6)
+                        .unwrap()
+                )
+            )),
         );
     }
 
@@ -297,7 +344,15 @@ mod tests {
     fn test_section_received() {
         assert_eq!(
             section("Sun, 18 Jun 2023 15:39:08 +0200 (CEST)"),
-            Ok(("", Some(FixedOffset::east_opt(2 * HOUR).unwrap().with_ymd_and_hms(2023, 6, 18, 15, 39, 8).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(2 * HOUR)
+                        .unwrap()
+                        .with_ymd_and_hms(2023, 6, 18, 15, 39, 8)
+                        .unwrap()
+                )
+            )),
         );
     }
 
@@ -310,8 +365,17 @@ mod tests {
            Feb
              1969
          23:32
-                  -0330 (Newfoundland Time)"#),
+                  -0330 (Newfoundland Time)"#
-            Ok(("", Some(FixedOffset::west_opt(3 * HOUR + 30 * MIN).unwrap().with_ymd_and_hms(1969, 2, 13, 23, 32, 00).unwrap()))),
+            ),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::west_opt(3 * HOUR + 30 * MIN)
+                        .unwrap()
+                        .with_ymd_and_hms(1969, 2, 13, 23, 32, 00)
+                        .unwrap()
+                )
+            )),
         );
     }
 
@@ -319,7 +383,15 @@ mod tests {
     fn test_section_rfc_obs() {
         assert_eq!(
             section("21 Nov 97 09:55:06 GMT"),
-            Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(1997, 11, 21, 9, 55, 6).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(0)
+                        .unwrap()
+                        .with_ymd_and_hms(1997, 11, 21, 9, 55, 6)
+                        .unwrap()
+                )
+            )),
         );
     }
 
@@ -327,7 +399,15 @@ mod tests {
     fn test_section_3digit_year() {
         assert_eq!(
             section("21 Nov 103 09:55:06 UT"),
-            Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2003, 11, 21, 9, 55, 6).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(0)
+                        .unwrap()
+                        .with_ymd_and_hms(2003, 11, 21, 9, 55, 6)
+                        .unwrap()
+                )
+            )),
         );
     }
 
@@ -335,7 +415,15 @@ mod tests {
     fn test_section_rfc_obs_ws() {
         assert_eq!(
             section("Fri, 21 Nov 1997 09(comment):   55  :  06 -0600"),
-            Ok(("", Some(FixedOffset::west_opt(6 * HOUR).unwrap().with_ymd_and_hms(1997, 11, 21, 9, 55, 6).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::west_opt(6 * HOUR)
+                        .unwrap()
+                        .with_ymd_and_hms(1997, 11, 21, 9, 55, 6)
+                        .unwrap()
+                )
+            )),
         );
     }
 
@@ -343,26 +431,56 @@ mod tests {
     fn test_section_2digit_year() {
         assert_eq!(
             section("21 Nov 23 09:55:06Z"),
-            Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 9, 55, 6).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(0)
+                        .unwrap()
+                        .with_ymd_and_hms(2023, 11, 21, 9, 55, 6)
+                        .unwrap()
+                )
+            )),
         );
     }
 
     #[test]
     fn test_section_military_zone_east() {
-        ["a", "B", "c", "D", "e", "F", "g", "H", "i", "K", "l", "M"].iter().enumerate().for_each(|(i, x)| {
+        ["a", "B", "c", "D", "e", "F", "g", "H", "i", "K", "l", "M"]
+            .iter()
+            .enumerate()
+            .for_each(|(i, x)| {
                 assert_eq!(
                     section(format!("1 Jan 22 08:00:00 {}", x).as_str()),
-                Ok(("", Some(FixedOffset::east_opt((i as i32 + 1) * HOUR).unwrap().with_ymd_and_hms(2022, 01, 01, 8, 0, 0).unwrap())))
+                    Ok((
+                        "",
+                        Some(
+                            FixedOffset::east_opt((i as i32 + 1) * HOUR)
+                                .unwrap()
+                                .with_ymd_and_hms(2022, 01, 01, 8, 0, 0)
+                                .unwrap()
+                        )
+                    ))
                 );
             });
     }
 
     #[test]
     fn test_section_military_zone_west() {
-        ["N", "O", "P", "q", "r", "s", "T", "U", "V", "w", "x", "y"].iter().enumerate().for_each(|(i, x)| {
+        ["N", "O", "P", "q", "r", "s", "T", "U", "V", "w", "x", "y"]
+            .iter()
+            .enumerate()
+            .for_each(|(i, x)| {
                 assert_eq!(
                     section(format!("1 Jan 22 08:00:00 {}", x).as_str()),
-                Ok(("", Some(FixedOffset::west_opt((i as i32 + 1) * HOUR).unwrap().with_ymd_and_hms(2022, 01, 01, 8, 0, 0).unwrap())))
+                    Ok((
+                        "",
+                        Some(
+                            FixedOffset::west_opt((i as i32 + 1) * HOUR)
+                                .unwrap()
+                                .with_ymd_and_hms(2022, 01, 01, 8, 0, 0)
+                                .unwrap()
+                        )
+                    ))
                 );
             });
     }
@@ -371,27 +489,75 @@ mod tests {
     fn test_section_gmt() {
         assert_eq!(
             section("21 Nov 2023 07:07:07 +0000"),
-            Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(0)
+                        .unwrap()
+                        .with_ymd_and_hms(2023, 11, 21, 7, 7, 7)
+                        .unwrap()
+                )
+            )),
         );
         assert_eq!(
             section("21 Nov 2023 07:07:07 -0000"),
-            Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(0)
+                        .unwrap()
+                        .with_ymd_and_hms(2023, 11, 21, 7, 7, 7)
+                        .unwrap()
+                )
+            )),
         );
         assert_eq!(
             section("21 Nov 2023 07:07:07 Z"),
-            Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(0)
+                        .unwrap()
+                        .with_ymd_and_hms(2023, 11, 21, 7, 7, 7)
+                        .unwrap()
+                )
+            )),
         );
         assert_eq!(
             section("21 Nov 2023 07:07:07 GMT"),
-            Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(0)
+                        .unwrap()
+                        .with_ymd_and_hms(2023, 11, 21, 7, 7, 7)
+                        .unwrap()
+                )
+            )),
         );
         assert_eq!(
             section("21 Nov 2023 07:07:07 UT"),
-            Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(0)
+                        .unwrap()
+                        .with_ymd_and_hms(2023, 11, 21, 7, 7, 7)
+                        .unwrap()
+                )
+            )),
         );
         assert_eq!(
             section("21 Nov 2023 07:07:07 UTC"),
-            Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::east_opt(0)
+                        .unwrap()
+                        .with_ymd_and_hms(2023, 11, 21, 7, 7, 7)
+                        .unwrap()
+                )
+            )),
         );
     }
 
@@ -399,7 +565,15 @@ mod tests {
     fn test_section_usa() {
         assert_eq!(
             section("21 Nov 2023 4:4:4 CST"),
-            Ok(("", Some(FixedOffset::west_opt(6 * HOUR).unwrap().with_ymd_and_hms(2023, 11, 21, 4, 4, 4).unwrap()))),
+            Ok((
+                "",
+                Some(
+                    FixedOffset::west_opt(6 * HOUR)
+                        .unwrap()
+                        .with_ymd_and_hms(2023, 11, 21, 4, 4, 4)
+                        .unwrap()
+                )
+            )),
         );
     }
 }

src/fragments/eager.rs

@@ -1,11 +1,9 @@
-use chrono::{DateTime, FixedOffset};
-use crate::fragments::model::{
-    MailboxList, MailboxRef, AddressList,
-    MessageId, MessageIdList};
-use crate::fragments::misc_token::{Unstructured, PhraseList};
-use crate::fragments::trace::ReceivedLog;
-use crate::fragments::lazy::Field as Lazy;
 use crate::error::IMFError;
+use crate::fragments::lazy::Field as Lazy;
+use crate::fragments::misc_token::{PhraseList, Unstructured};
+use crate::fragments::model::{AddressList, MailboxList, MailboxRef, MessageId, MessageIdList};
+use crate::fragments::trace::ReceivedLog;
+use chrono::{DateTime, FixedOffset};
 
 #[derive(Debug, PartialEq)]
 pub enum Field<'a> {

src/fragments/identification.rs

@@ -1,18 +1,18 @@
 use nom::{
-    IResult,
     branch::alt,
-    bytes::complete::{take_while, tag},
+    bytes::complete::{tag, take_while},
     combinator::opt,
     multi::many1,
     sequence::{delimited, pair, tuple},
+    IResult,
 };
 
+use crate::error::IMFError;
 use crate::fragments::lazy;
-use crate::fragments::whitespace::cfws;
-use crate::fragments::words::dot_atom_text;
 use crate::fragments::mailbox::is_dtext;
 use crate::fragments::model::{MessageId, MessageIdList};
-use crate::error::IMFError;
+use crate::fragments::whitespace::cfws;
+use crate::fragments::words::dot_atom_text;
 
 impl<'a> TryFrom<&'a lazy::Identifier<'a>> for MessageId<'a> {
     type Error = IMFError<'a>;
@@ -70,7 +70,13 @@ mod tests {
     fn test_msg_id() {
         assert_eq!(
             msg_id("<5678.21-Nov-1997@example.com>"),
-            Ok(("", MessageId{left: "5678.21-Nov-1997", right: "example.com"})),
+            Ok((
+                "",
+                MessageId {
+                    left: "5678.21-Nov-1997",
+                    right: "example.com"
+                }
+            )),
         );
     }
 }

src/fragments/lazy.rs

@@ -1,10 +1,10 @@
 use std::convert::From;
 
 use nom::{
-    IResult,
+    bytes::complete::{tag, take_while1},
-    bytes::complete::{take_while1, tag},
     character::complete::space0,
     sequence::{terminated, tuple},
+    IResult,
 };
 
 #[derive(Debug, PartialEq)]
@@ -98,13 +98,15 @@ impl<'a> From<&'a str> for Field<'a> {
 fn field_name(input: &str) -> IResult<&str, &str> {
     terminated(
         take_while1(|c| c >= '\x21' && c <= '\x7E' && c != '\x3A'),
-        tuple((space0, tag(":"), space0))
+        tuple((space0, tag(":"), space0)),
     )(input)
 }
 
 fn correct_field(input: &str) -> IResult<&str, Field> {
-    field_name(input)
+    field_name(input).map(|(rest, name)| {
-        .map(|(rest, name)| ("", match name.to_lowercase().as_ref() {
+        (
+            "",
+            match name.to_lowercase().as_ref() {
                 "date" => Date(DateTime(rest)),
 
                 "from" => From(MailboxList(rest)),
@@ -127,5 +129,7 @@ fn correct_field(input: &str) -> IResult<&str, Field> {
                 "received" => Received(ReceivedLog(rest)),
 
                 _ => Optional(name, Unstructured(rest)),
-    }))
+            },
+        )
+    })
 }

src/fragments/mailbox.rs

@@ -1,19 +1,19 @@
-use std::borrow::Cow;
 use nom::{
-    IResult,
     branch::alt,
-    bytes::complete::{tag, is_a},
+    bytes::complete::{is_a, tag},
     character::complete::satisfy,
     combinator::{into, map, opt, recognize},
-    multi::{separated_list1, fold_many0, many0},
+    multi::{fold_many0, many0, separated_list1},
     sequence::{delimited, pair, preceded, terminated, tuple},
+    IResult,
 };
+use std::borrow::Cow;
 
-use crate::fragments::model::{MailboxRef, AddrSpec};
 use crate::fragments::misc_token::{phrase, word};
+use crate::fragments::model::{AddrSpec, MailboxRef};
+use crate::fragments::quoted::quoted_string;
 use crate::fragments::whitespace::{cfws, fws, is_obs_no_ws_ctl};
 use crate::fragments::words::{atom, dot_atom};
-use crate::fragments::quoted::quoted_string;
 
 /// Mailbox
 ///
@@ -61,7 +61,10 @@ fn obs_route(input: &str) -> IResult<&str, Vec<String>> {
 /// ```
 fn obs_domain_list(input: &str) -> IResult<&str, Vec<String>> {
     //@FIXME complexity is O(n) in term of domains here.
-    let (input, head) = preceded(pair(many0(alt((recognize(cfws), tag(",")))), tag("@")), obs_domain)(input)?; 
+    let (input, head) = preceded(
+        pair(many0(alt((recognize(cfws), tag(",")))), tag("@")),
+        obs_domain,
+    )(input)?;
     let (input, mut rest) = obs_domain_list_rest(input)?;
     rest.insert(0, head);
     Ok((input, rest))
@@ -73,7 +76,7 @@ fn obs_domain_list_rest(input: &str) -> IResult<&str, Vec<String>> {
             pair(tag(","), opt(cfws)),
             opt(preceded(tag("@"), obs_domain)),
         )),
-        |v: Vec<Option<String>>| v.into_iter().flatten().collect()
+        |v: Vec<Option<String>>| v.into_iter().flatten().collect(),
     )(input)
 }
 
@@ -86,9 +89,13 @@ fn obs_domain_list_rest(input: &str) -> IResult<&str, Vec<String>> {
 /// so I force obsolete for now...
 pub fn addr_spec(input: &str) -> IResult<&str, AddrSpec> {
     map(
-        tuple((obs_local_part, tag("@"), obs_domain, many0(pair(tag("@"), obs_domain)))),
+        tuple((
-        |(local_part, _, domain, _)| 
+            obs_local_part,
-            AddrSpec { local_part, domain },
+            tag("@"),
+            obs_domain,
+            many0(pair(tag("@"), obs_domain)),
+        )),
+        |(local_part, _, domain, _)| AddrSpec { local_part, domain },
     )(input)
 }
 
@@ -118,7 +125,8 @@ fn obs_local_part(input: &str) -> IResult<&str, String> {
     fold_many0(
         alt((map(is_a("."), Cow::Borrowed), word)),
         String::new,
-        |acc, chunk| acc + &chunk)(input)
+        |acc, chunk| acc + &chunk,
+    )(input)
 }
 
 /// Domain
@@ -140,7 +148,10 @@ pub fn strict_domain(input: &str) -> IResult<&str, String> {
 ///  obs-domain      =   atom *("." atom) / domain-literal
 /// ```
 pub fn obs_domain(input: &str) -> IResult<&str, String> {
-    alt((map(separated_list1(tag("."), atom), |v| v.join(".")), domain_litteral))(input)
+    alt((
+        map(separated_list1(tag("."), atom), |v| v.join(".")),
+        domain_litteral,
+    ))(input)
 }
 
 /// Domain litteral
@@ -152,15 +163,16 @@ fn domain_litteral(input: &str) -> IResult<&str, String> {
     delimited(
         pair(opt(cfws), tag("[")),
         inner_domain_litteral,
-        pair(tag("]"), opt(cfws))
+        pair(tag("]"), opt(cfws)),
     )(input)
 }
 
 fn inner_domain_litteral(input: &str) -> IResult<&str, String> {
-    let (input, (cvec, maybe_wsp)) = pair(many0(pair(opt(fws), satisfy(is_dtext))), opt(fws))(input)?;
+    let (input, (cvec, maybe_wsp)) =
-    let mut domain = cvec.iter().fold(
+        pair(many0(pair(opt(fws), satisfy(is_dtext))), opt(fws))(input)?;
-        String::with_capacity(16),
+    let mut domain = cvec
-        |mut acc, (maybe_wsp, c)| {
+        .iter()
+        .fold(String::with_capacity(16), |mut acc, (maybe_wsp, c)| {
             if let Some(wsp) = maybe_wsp {
                 acc.push(*wsp);
             }
@@ -174,7 +186,6 @@ fn inner_domain_litteral(input: &str) -> IResult<&str, String> {
     Ok((input, domain))
 }
 
-
 fn is_strict_dtext(c: char) -> bool {
     (c >= '\x21' && c <= '\x5A') || (c >= '\x5E' && c <= '\x7E') || !c.is_ascii()
 }
@@ -198,89 +209,213 @@ mod tests {
 
     #[test]
     fn test_addr_spec() {
-        assert_eq!(addr_spec("alice@example.com"), Ok(("", AddrSpec{local_part: "alice".into(), domain: "example.com".into() })));
+        assert_eq!(
+            addr_spec("alice@example.com"),
+            Ok((
+                "",
+                AddrSpec {
+                    local_part: "alice".into(),
+                    domain: "example.com".into()
+                }
+            ))
+        );
 
-        assert_eq!(addr_spec("jsmith@[192.168.2.1]"), Ok(("", AddrSpec{local_part: "jsmith".into(), domain: "192.168.2.1".into() })));
+        assert_eq!(
-        assert_eq!(addr_spec("jsmith@[IPv6:2001:db8::1]"), Ok(("", AddrSpec{local_part: "jsmith".into(), domain: "IPv6:2001:db8::1".into() })));
+            addr_spec("jsmith@[192.168.2.1]"),
+            Ok((
+                "",
+                AddrSpec {
+                    local_part: "jsmith".into(),
+                    domain: "192.168.2.1".into()
+                }
+            ))
+        );
+        assert_eq!(
+            addr_spec("jsmith@[IPv6:2001:db8::1]"),
+            Ok((
+                "",
+                AddrSpec {
+                    local_part: "jsmith".into(),
+                    domain: "IPv6:2001:db8::1".into()
+                }
+            ))
+        );
 
         // UTF-8
-        assert_eq!(addr_spec("用户@例子.广告"), Ok(("", AddrSpec{local_part: "用户".into(), domain: "例子.广告".into()})));
+        assert_eq!(
+            addr_spec("用户@例子.广告"),
+            Ok((
+                "",
+                AddrSpec {
+                    local_part: "用户".into(),
+                    domain: "例子.广告".into()
+                }
+            ))
+        );
 
         // ASCII Edge cases
         assert_eq!(
             addr_spec("user+mailbox/department=shipping@example.com"),
-            Ok(("", AddrSpec{local_part: "user+mailbox/department=shipping".into(), domain: "example.com".into()})));
+            Ok((
+                "",
+                AddrSpec {
+                    local_part: "user+mailbox/department=shipping".into(),
+                    domain: "example.com".into()
+                }
+            ))
+        );
         assert_eq!(
             addr_spec("!#$%&'*+-/=?^_`.{|}~@example.com"),
-            Ok(("", AddrSpec{local_part: "!#$%&'*+-/=?^_`.{|}~".into(), domain: "example.com".into()})));
+            Ok((
+                "",
+                AddrSpec {
+                    local_part: "!#$%&'*+-/=?^_`.{|}~".into(),
+                    domain: "example.com".into()
+                }
+            ))
+        );
         assert_eq!(
             addr_spec(r#""Abc@def"@example.com"#),
-            Ok(("", AddrSpec{local_part: "Abc@def".into(), domain: "example.com".into()})));
+            Ok((
-        assert_eq!(addr_spec(r#""Fred\ Bloggs"@example.com"#), Ok(("", AddrSpec{local_part: "Fred Bloggs".into(), domain: "example.com".into()})));
+                "",
-        assert_eq!(addr_spec(r#""Joe.\\Blow"@example.com"#), Ok(("", AddrSpec{local_part: r#"Joe.\Blow"#.into(), domain: "example.com".into()})));
+                AddrSpec {
+                    local_part: "Abc@def".into(),
+                    domain: "example.com".into()
+                }
+            ))
+        );
+        assert_eq!(
+            addr_spec(r#""Fred\ Bloggs"@example.com"#),
+            Ok((
+                "",
+                AddrSpec {
+                    local_part: "Fred Bloggs".into(),
+                    domain: "example.com".into()
+                }
+            ))
+        );
+        assert_eq!(
+            addr_spec(r#""Joe.\\Blow"@example.com"#),
+            Ok((
+                "",
+                AddrSpec {
+                    local_part: r#"Joe.\Blow"#.into(),
+                    domain: "example.com".into()
+                }
+            ))
+        );
     }
 
     #[test]
     fn test_mailbox() {
-        assert_eq!(mailbox(r#""Joe Q. Public" <john.q.public@example.com>"#), Ok(("", MailboxRef {
+        assert_eq!(
+            mailbox(r#""Joe Q. Public" <john.q.public@example.com>"#),
+            Ok((
+                "",
+                MailboxRef {
                     name: Some("Joe Q. Public".into()),
                     addrspec: AddrSpec {
                         local_part: "john.q.public".into(),
                         domain: "example.com".into(),
                     }
-        })));
+                }
+            ))
+        );
 
-        assert_eq!(mailbox(r#"Mary Smith <mary@x.test>"#), Ok(("", MailboxRef {
+        assert_eq!(
+            mailbox(r#"Mary Smith <mary@x.test>"#),
+            Ok((
+                "",
+                MailboxRef {
                     name: Some("Mary Smith".into()),
                     addrspec: AddrSpec {
                         local_part: "mary".into(),
                         domain: "x.test".into(),
                     }
-        })));
+                }
+            ))
+        );
 
-        assert_eq!(mailbox(r#"jdoe@example.org"#), Ok(("", MailboxRef {
+        assert_eq!(
+            mailbox(r#"jdoe@example.org"#),
+            Ok((
+                "",
+                MailboxRef {
                     name: None,
                     addrspec: AddrSpec {
                         local_part: "jdoe".into(),
                         domain: "example.org".into(),
                     }
-        })));
+                }
+            ))
+        );
 
-        assert_eq!(mailbox(r#"Who? <one@y.test>"#), Ok(("", MailboxRef {
+        assert_eq!(
+            mailbox(r#"Who? <one@y.test>"#),
+            Ok((
+                "",
+                MailboxRef {
                     name: Some("Who?".into()),
                     addrspec: AddrSpec {
                         local_part: "one".into(),
                         domain: "y.test".into(),
                     }
-        })));
+                }
+            ))
+        );
 
-        assert_eq!(mailbox(r#"<boss@nil.test>"#), Ok(("", MailboxRef {
+        assert_eq!(
+            mailbox(r#"<boss@nil.test>"#),
+            Ok((
+                "",
+                MailboxRef {
                     name: None,
                     addrspec: AddrSpec {
                         local_part: "boss".into(),
                         domain: "nil.test".into(),
                     }
-        })));
+                }
+            ))
+        );
 
-        assert_eq!(mailbox(r#""Giant; \"Big\" Box" <sysservices@example.net>"#), Ok(("", MailboxRef {
+        assert_eq!(
+            mailbox(r#""Giant; \"Big\" Box" <sysservices@example.net>"#),
+            Ok((
+                "",
+                MailboxRef {
                     name: Some(r#"Giant; "Big" Box"#.into()),
                     addrspec: AddrSpec {
                         local_part: "sysservices".into(),
                         domain: "example.net".into(),
                     }
-        })));
+                }
+            ))
+        );
     }
 
     #[test]
     fn test_obs_domain_list() {
-        assert_eq!(obs_domain_list(r#"(shhh it's coming)
+        assert_eq!(
+            obs_domain_list(
+                r#"(shhh it's coming)
  ,
  (not yet)
  @33+4.com,,,,
  ,,,,
  (again)
- @example.com,@yep.com,@a,@b,,,@c"#),
+ @example.com,@yep.com,@a,@b,,,@c"#
-            Ok(("", vec!["33+4.com".into(), "example.com".into(), "yep.com".into(), "a".into(), "b".into(), "c".into()]))
+            ),
+            Ok((
+                "",
+                vec![
+                    "33+4.com".into(),
+                    "example.com".into(),
+                    "yep.com".into(),
+                    "a".into(),
+                    "b".into(),
+                    "c".into()
+                ]
+            ))
         );
     }
 
@@ -288,10 +423,13 @@ mod tests {
     fn test_enron1() {
         assert_eq!(
             addr_spec("a..howard@enron.com"),
-            Ok(("", AddrSpec {
+            Ok((
+                "",
+                AddrSpec {
                     local_part: "a..howard".into(),
                     domain: "enron.com".into(),
-            }))
+                }
+            ))
         );
     }
 
@@ -299,10 +437,13 @@ mod tests {
     fn test_enron2() {
         assert_eq!(
             addr_spec(".nelson@enron.com"),
-            Ok(("", AddrSpec {
+            Ok((
+                "",
+                AddrSpec {
                     local_part: ".nelson".into(),
                     domain: "enron.com".into(),
-            }))
+                }
+            ))
         );
     }
 
@@ -310,25 +451,30 @@ mod tests {
     fn test_enron3() {
         assert_eq!(
             addr_spec("ecn2760.conf.@enron.com"),
-            Ok(("", AddrSpec {
+            Ok((
+                "",
+                AddrSpec {
                     local_part: "ecn2760.conf.".into(),
                     domain: "enron.com".into(),
-            }))
+                }
+            ))
         );
     }
 
-
     #[test]
     fn test_enron4() {
         assert_eq!(
             mailbox(r#"<"mark_kopinski/intl/acim/americancentury"@americancentury.com@enron.com>"#),
-            Ok(("", MailboxRef {
+            Ok((
+                "",
+                MailboxRef {
                     name: None,
                     addrspec: AddrSpec {
                         local_part: "mark_kopinski/intl/acim/americancentury".into(),
                         domain: "americancentury.com".into(),
                     }
-            }))
+                }
+            ))
         );
     }
 }

src/fragments/misc_token.rs

@@ -1,19 +1,19 @@
-use std::borrow::Cow;
 use nom::{
-    IResult,
     branch::alt,
-    bytes::complete::{take_while1, tag},
+    bytes::complete::{tag, take_while1},
     character::complete::space0,
     combinator::{into, opt},
     multi::{many0, many1, separated_list1},
     sequence::tuple,
+    IResult,
 };
+use std::borrow::Cow;
 
+use crate::error::IMFError;
 use crate::fragments::lazy;
 use crate::fragments::quoted::quoted_string;
 use crate::fragments::whitespace::{fws, is_obs_no_ws_ctl};
 use crate::fragments::words::{atom, is_vchar};
-use crate::error::IMFError;
 
 #[derive(Debug, PartialEq, Default)]
 pub struct Unstructured(pub String);
@@ -101,7 +101,13 @@ mod tests {
     #[test]
     fn test_phrase() {
         assert_eq!(phrase("hello world"), Ok(("", "hello world".into())));
-        assert_eq!(phrase("salut \"le\" monde"), Ok(("", "salut le monde".into())));
+        assert_eq!(
-        assert_eq!(phrase("fin\r\n du\r\nmonde"), Ok(("\r\nmonde", "fin du".into())));
+            phrase("salut \"le\" monde"),
+            Ok(("", "salut le monde".into()))
+        );
+        assert_eq!(
+            phrase("fin\r\n du\r\nmonde"),
+            Ok(("\r\nmonde", "fin du".into()))
+        );
     }
 }

src/fragments/mod.rs

@@ -2,17 +2,17 @@
 pub mod model;
 
 // Generic
+pub mod misc_token;
+mod quoted;
 pub mod whitespace;
 mod words;
-mod quoted;
-pub mod misc_token;
 
 // Header specific
-mod mailbox;
 mod address;
-mod identification;
-pub mod trace;
 mod datetime;
-pub mod lazy;
 pub mod eager;
+mod identification;
+pub mod lazy;
+mod mailbox;
 pub mod section;
+pub mod trace;

src/fragments/model.rs

@@ -1,5 +1,5 @@
-use std::collections::HashMap;
 use chrono::{DateTime, FixedOffset};
+use std::collections::HashMap;
 
 #[derive(Debug, PartialEq)]
 pub struct AddrSpec {

src/fragments/quoted.rs

@@ -1,14 +1,14 @@
 use nom::{
-    IResult,
     branch::alt,
     bytes::complete::tag,
     character::complete::{anychar, satisfy},
     combinator::opt,
     multi::many0,
     sequence::{pair, preceded},
+    IResult,
 };
 
-use crate::fragments::whitespace::{fws, cfws, is_obs_no_ws_ctl};
+use crate::fragments::whitespace::{cfws, fws, is_obs_no_ws_ctl};
 
 /// Quoted pair
 ///
@@ -58,9 +58,9 @@ pub fn quoted_string(input: &str) -> IResult<&str, String> {
     let (input, content) = many0(pair(opt(fws), qcontent))(input)?;
 
     // Rebuild string
-  let mut qstring = content.iter().fold(
+    let mut qstring = content
-    String::with_capacity(16), 
+        .iter()
-    |mut acc, (maybe_wsp, c)| {
+        .fold(String::with_capacity(16), |mut acc, (maybe_wsp, c)| {
             if let Some(wsp) = maybe_wsp {
                 acc.push(*wsp);
             }
@@ -84,7 +84,13 @@ mod tests {
 
     #[test]
     fn test_quoted_string() {
-        assert_eq!(quoted_string(" \"hello\\\"world\" "), Ok(("", "hello\"world".to_string())));
+        assert_eq!(
-        assert_eq!(quoted_string("\"hello\r\n world\""), Ok(("", "hello world".to_string())));
+            quoted_string(" \"hello\\\"world\" "),
+            Ok(("", "hello\"world".to_string()))
+        );
+        assert_eq!(
+            quoted_string("\"hello\r\n world\""),
+            Ok(("", "hello world".to_string()))
+        );
     }
 }

src/fragments/section.rs

@@ -1,11 +1,11 @@
 use std::collections::HashMap;
 
-use chrono::{DateTime, FixedOffset};
-use crate::fragments::model::{MailboxRef,MessageId, AddressRef};
-use crate::fragments::misc_token::{Unstructured, PhraseList};
-use crate::fragments::trace::ReceivedLog;
 use crate::fragments::eager::Field;
 use crate::fragments::lazy;
+use crate::fragments::misc_token::{PhraseList, Unstructured};
+use crate::fragments::model::{AddressRef, MailboxRef, MessageId};
+use crate::fragments::trace::ReceivedLog;
+use chrono::{DateTime, FixedOffset};
 
 #[derive(Debug, PartialEq, Default)]
 pub struct Section<'a> {
@@ -67,11 +67,12 @@ impl<'a> FromIterator<&'a Field<'a>> for Section<'a> {
                 Field::Keywords(v) => section.keywords.push(v),
                 Field::ReturnPath(v) => section.return_path.push(v),
                 Field::Received(v) => section.received.push(v),
-                Field::Optional(k, v) => { section.optional.insert(k, v); },
+                Field::Optional(k, v) => {
+                    section.optional.insert(k, v);
+                }
                 Field::Rescue(v) => section.unparsed.push(v),
             }
         }
         section
     }
 }
-

src/fragments/trace.rs

@@ -1,13 +1,13 @@
+use crate::error::IMFError;
+use crate::fragments::{datetime, lazy, mailbox, misc_token, model, whitespace};
 use nom::{
-    IResult,
     branch::alt,
     bytes::complete::tag,
     combinator::{map, opt, recognize},
     multi::many0,
     sequence::tuple,
+    IResult,
 };
-use crate::fragments::{datetime, mailbox, model, misc_token, whitespace, lazy};
-use crate::error::IMFError;
 
 #[derive(Debug, PartialEq)]
 pub struct ReceivedLog<'a>(pub &'a str);
@@ -34,10 +34,7 @@ pub fn received_body(input: &str) -> IResult<&str, &str> {
 }
 
 pub fn return_path_body(input: &str) -> IResult<&str, Option<model::MailboxRef>> {
-    alt((
+    alt((map(mailbox::angle_addr, |a| Some(a)), empty_path))(input)
-        map(mailbox::angle_addr, |a| Some(a)), 
-        empty_path
-    ))(input)
 }
 
 fn empty_path(input: &str) -> IResult<&str, Option<model::MailboxRef>> {
@@ -61,7 +58,6 @@ fn received_tokens(input: &str) -> IResult<&str, &str> {
     ))(input)
 }
 
-
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -76,11 +72,14 @@ mod tests {
 
         assert_eq!(
             received_body(hdrs),
-            Ok(("",  r#"from smtp.example.com ([10.83.2.2])
+            Ok((
+                "",
+                r#"from smtp.example.com ([10.83.2.2])
     by server with LMTP
     id xxxxxxxxx
     (envelope-from <gitlab@example.com>)
-    for <me@example.com>"#))
+    for <me@example.com>"#
+            ))
         );
     }
 }

src/fragments/whitespace.rs

@@ -1,13 +1,13 @@
+use crate::fragments::quoted::quoted_pair;
 use nom::{
-    IResult,
     branch::alt,
     bytes::complete::tag,
     character::complete::{crlf, satisfy, space0, space1},
-    combinator::{recognize, opt},
+    combinator::{opt, recognize},
     multi::{many0, many1},
     sequence::tuple,
+    IResult,
 };
-use crate::fragments::quoted::quoted_pair;
 
 // --- whitespaces and comments
 
@@ -40,7 +40,6 @@ fn fold_marker(input: &str) -> IResult<&str, &str> {
     space1(input)
 }
 
-
 /// Folding White Space with Comment
 ///
 /// Note: we drop the comments for now...  
@@ -92,7 +91,10 @@ pub fn ctext(input: &str) -> IResult<&str, char> {
 ///                       obs-ctext
 ///```
 pub fn is_restr_ctext(c: char) -> bool {
-    (c >= '\x21' && c <= '\x27') || (c >= '\x2A' && c <= '\x5B') || (c >= '\x5D' && c <= '\x7E') || !c.is_ascii()
+    (c >= '\x21' && c <= '\x27')
+        || (c >= '\x2A' && c <= '\x5B')
+        || (c >= '\x5D' && c <= '\x7E')
+        || !c.is_ascii()
 }
 
 pub fn is_ctext(c: char) -> bool {
@@ -109,7 +111,11 @@ pub fn is_ctext(c: char) -> bool {
 ///                       %d127              ;  white space characters
 /// ```
 pub fn is_obs_no_ws_ctl(c: char) -> bool {
-    (c >= '\x01' && c <= '\x08') || c == '\x0b' || c == '\x0b' || (c >= '\x0e' && c<= '\x1f') || c == '\x7F'
+    (c >= '\x01' && c <= '\x08')
+        || c == '\x0b'
+        || c == '\x0b'
+        || (c >= '\x0e' && c <= '\x1f')
+        || c == '\x7F'
 }
 
 #[cfg(test)]
@@ -133,8 +139,20 @@ mod tests {
 
     #[test]
     fn test_cfws() {
-        assert_eq!(cfws("(A nice \\) chap) <pete(his account)@silly.test(his host)>"), Ok(("<pete(his account)@silly.test(his host)>", "(A nice \\) chap) ")));
+        assert_eq!(
-        assert_eq!(cfws("(Chris's host.)public.example>,"), Ok(("public.example>,", "(Chris's host.)")));
+            cfws("(A nice \\) chap) <pete(his account)@silly.test(his host)>"),
-        assert_eq!(cfws("(double (comment) is fun) wouch"), Ok(("wouch", "(double (comment) is fun) ")));
+            Ok((
+                "<pete(his account)@silly.test(his host)>",
+                "(A nice \\) chap) "
+            ))
+        );
+        assert_eq!(
+            cfws("(Chris's host.)public.example>,"),
+            Ok(("public.example>,", "(Chris's host.)"))
+        );
+        assert_eq!(
+            cfws("(double (comment) is fun) wouch"),
+            Ok(("wouch", "(double (comment) is fun) "))
+        );
     }
 }

src/fragments/words.rs

@@ -1,12 +1,11 @@
+use crate::fragments::whitespace::cfws;
 use nom::{
-    IResult,
     bytes::complete::{tag, take_while1},
-    combinator::{recognize, opt},
+    combinator::{opt, recognize},
     multi::many0,
     sequence::{delimited, pair},
+    IResult,
 };
-use crate::fragments::whitespace::cfws;
-
 
 /// VCHAR definition
 pub fn is_vchar(c: char) -> bool {
@@ -42,7 +41,10 @@ pub fn atom(input: &str) -> IResult<&str, &str> {
 ///
 /// `1*atext *("." 1*atext)`
 pub fn dot_atom_text(input: &str) -> IResult<&str, &str> {
-    recognize(pair(take_while1(is_atext), many0(pair(tag("."), take_while1(is_atext)))))(input)
+    recognize(pair(
+        take_while1(is_atext),
+        many0(pair(tag("."), take_while1(is_atext))),
+    ))(input)
 }
 
 /// dot-atom
@@ -54,13 +56,19 @@ pub fn dot_atom(input: &str) -> IResult<&str, &str> {
 
 #[allow(dead_code)]
 pub fn is_special(c: char) -> bool {
-    c == '(' || c == ')' || 
+    c == '('
-    c == '<' || c == '>' ||
+        || c == ')'
-    c == '[' || c == ']' ||
+        || c == '<'
-    c == ':' || c == ';' ||
+        || c == '>'
-    c == '@' || c == '\\' ||
+        || c == '['
-    c == ',' || c == '.' ||
+        || c == ']'
-    c == '"'
+        || c == ':'
+        || c == ';'
+        || c == '@'
+        || c == '\\'
+        || c == ','
+        || c == '.'
+        || c == '"'
 }
 
 #[cfg(test)]
@@ -84,16 +92,25 @@ mod tests {
 
     #[test]
     fn test_atom() {
-        assert_eq!(atom("(skip)  imf_codec (hidden) aerogramme"), Ok(("aerogramme", "imf_codec")));
+        assert_eq!(
+            atom("(skip)  imf_codec (hidden) aerogramme"),
+            Ok(("aerogramme", "imf_codec"))
+        );
     }
 
     #[test]
     fn test_dot_atom_text() {
-        assert_eq!(dot_atom_text("quentin.dufour.io abcdef"), Ok((" abcdef", "quentin.dufour.io")));
+        assert_eq!(
+            dot_atom_text("quentin.dufour.io abcdef"),
+            Ok((" abcdef", "quentin.dufour.io"))
+        );
     }
 
     #[test]
     fn test_dot_atom() {
-        assert_eq!(dot_atom("   (skip) quentin.dufour.io abcdef"), Ok(("abcdef", "quentin.dufour.io")));
+        assert_eq!(
+            dot_atom("   (skip) quentin.dufour.io abcdef"),
+            Ok(("abcdef", "quentin.dufour.io"))
+        );
     }
 }

src/multipass/extract_fields.rs

@@ -1,16 +1,16 @@
 use nom::{
-    IResult,
-    character::complete::space1,
     bytes::complete::is_not,
+    character::complete::space1,
     combinator::{all_consuming, recognize},
     multi::{many0, many1},
     sequence::{pair, tuple},
+    IResult,
 };
 
 use crate::error::IMFError;
 use crate::fragments::whitespace;
-use crate::multipass::guess_charset;
 use crate::multipass::field_lazy;
+use crate::multipass::guess_charset;
 
 #[derive(Debug, PartialEq)]
 pub struct Parsed<'a> {
@@ -21,7 +21,10 @@ pub struct Parsed<'a> {
 pub fn new<'a>(gcha: &'a guess_charset::Parsed<'a>) -> Result<Parsed<'a>, IMFError<'a>> {
     all_consuming(many0(foldable_line))(&gcha.header)
         .map_err(|e| IMFError::ExtractFields(e))
-        .map(|(_, fields)| Parsed { fields, body: gcha.body })
+        .map(|(_, fields)| Parsed {
+            fields,
+            body: gcha.body,
+        })
 }
 
 impl<'a> Parsed<'a> {
@@ -38,8 +41,9 @@ fn foldable_line(input: &str) -> IResult<&str, &str> {
         is_not("\r\n"),
         many0(pair(
             many1(pair(whitespace::perm_crlf, space1)),
-                is_not("\r\n"))), 
+            is_not("\r\n"),
-        whitespace::perm_crlf
+        )),
+        whitespace::perm_crlf,
     )))(input)
 }
 

src/multipass/field_eager.rs

@@ -10,7 +10,8 @@ pub struct Parsed<'a> {
 
 pub fn new<'a>(p: &'a field_lazy::Parsed<'a>) -> Parsed<'a> {
     Parsed {
-        fields: p.fields
+        fields: p
+            .fields
             .iter()
             .filter_map(|entry| entry.try_into().ok())
             .collect(),
@@ -33,9 +34,12 @@ mod tests {
 
     #[test]
     fn test_field_body() {
-        assert_eq!(new(&field_lazy::Parsed {
+        assert_eq!(
+            new(&field_lazy::Parsed {
                 fields: vec![
-                lazy::Field::From(lazy::MailboxList("hello@world.com,\r\n\talice@wonderlands.com\r\n")),
+                    lazy::Field::From(lazy::MailboxList(
+                        "hello@world.com,\r\n\talice@wonderlands.com\r\n"
+                    )),
                     lazy::Field::Date(lazy::DateTime("12 Mar 1997 07:33:25 Z\r\n")),
                 ],
                 body: b"Hello world!",
@@ -66,14 +70,20 @@ mod tests {
                     ),
                 ],
                 body: b"Hello world!",
-        });
+            }
+        );
     }
 
-    use crate::multipass::extract_fields;
     use crate::fragments::misc_token;
+    use crate::multipass::extract_fields;
     fn lazy_eager<F>(input: &str, func: F)
-    where F: Fn(&eager::Field) {
+    where
-        let field = extract_fields::Parsed { fields: vec![input], body: b""};
+        F: Fn(&eager::Field),
+    {
+        let field = extract_fields::Parsed {
+            fields: vec![input],
+            body: b"",
+        };
         let lazy = field_lazy::new(&field);
         let eager = new(&lazy);
         func(eager.fields.first().unwrap())
@@ -83,7 +93,8 @@ mod tests {
     fn test_from() {
         lazy_eager(
             "From: \"Joe Q. Public\" <john.q.public@example.com>\r\n",
-            |from| assert_eq!(
+            |from| {
+                assert_eq!(
                     from,
                     &eager::Field::From(vec![model::MailboxRef {
                         name: Some("Joe Q. Public".into()),
@@ -93,6 +104,7 @@ mod tests {
                         }
                     }])
                 )
+            },
         );
     }
 
@@ -100,7 +112,8 @@ mod tests {
     fn test_sender() {
         lazy_eager(
             "Sender: Michael Jones <mjones@machine.example>\r\n",
-            |sender| assert_eq!(
+            |sender| {
+                assert_eq!(
                     sender,
                     &eager::Field::Sender(model::MailboxRef {
                         name: Some("Michael Jones".into()),
@@ -110,6 +123,7 @@ mod tests {
                         },
                     })
                 )
+            },
         );
     }
 
@@ -117,18 +131,18 @@ mod tests {
     fn test_reply_to() {
         lazy_eager(
             "Reply-To: \"Mary Smith: Personal Account\" <smith@home.example>\r\n",
-            |reply_to| assert_eq!(
+            |reply_to| {
+                assert_eq!(
                     reply_to,
-                &eager::Field::ReplyTo(
+                    &eager::Field::ReplyTo(vec![model::AddressRef::Single(model::MailboxRef {
-                    vec![model::AddressRef::Single(model::MailboxRef {
                         name: Some("Mary Smith: Personal Account".into()),
                         addrspec: model::AddrSpec {
                             local_part: "smith".into(),
                             domain: "home.example".into(),
                         },
-                    })]
+                    })])
-                )
                 )
+            },
         )
     }
 
@@ -136,134 +150,144 @@ mod tests {
     fn test_to() {
         lazy_eager(
             "To: A Group:Ed Jones <c@a.test>,joe@where.test,John <jdoe@one.test>;\r\n",
-            |to| assert_eq!(
+            |to| {
+                assert_eq!(
                     to,
                     &eager::Field::To(vec![model::AddressRef::Many(model::GroupRef {
                         name: "A Group".into(),
                         participants: vec![
                             model::MailboxRef {
                                 name: Some("Ed Jones".into()),
-                            addrspec: model::AddrSpec { local_part: "c".into(), domain: "a.test".into() },
+                                addrspec: model::AddrSpec {
+                                    local_part: "c".into(),
+                                    domain: "a.test".into()
+                                },
                             },
                             model::MailboxRef {
                                 name: None,
-                            addrspec: model::AddrSpec { local_part: "joe".into(), domain: "where.test".into() },
+                                addrspec: model::AddrSpec {
+                                    local_part: "joe".into(),
+                                    domain: "where.test".into()
+                                },
                             },
                             model::MailboxRef {
                                 name: Some("John".into()),
-                            addrspec: model::AddrSpec { local_part: "jdoe".into(), domain: "one.test".into() },
+                                addrspec: model::AddrSpec {
+                                    local_part: "jdoe".into(),
+                                    domain: "one.test".into()
+                                },
                             },
                         ]
                     })])
                 )
+            },
         )
     }
 
     #[test]
     fn test_cc() {
-       lazy_eager(
+        lazy_eager("Cc: Undisclosed recipients:;\r\n", |cc| {
-           "Cc: Undisclosed recipients:;\r\n",
+            assert_eq!(
-           |cc| assert_eq!(
                 cc,
                 &eager::Field::Cc(vec![model::AddressRef::Many(model::GroupRef {
                     name: "Undisclosed recipients".into(),
                     participants: vec![],
                 })]),
             )
-        )
+        })
     }
 
     #[test]
     fn test_bcc() {
-       lazy_eager(
+        lazy_eager("Bcc: (empty)\r\n", |bcc| {
-           "Bcc: (empty)\r\n",
+            assert_eq!(bcc, &eager::Field::Bcc(vec![]),)
-           |bcc| assert_eq!(
+        });
-               bcc,
-               &eager::Field::Bcc(vec![]),
-            )
-        );
 
-       lazy_eager(
+        lazy_eager("Bcc: \r\n", |bcc| {
-           "Bcc: \r\n",
+            assert_eq!(bcc, &eager::Field::Bcc(vec![]),)
-           |bcc| assert_eq!(
+        });
-               bcc,
-               &eager::Field::Bcc(vec![]),
-            )
-        );
     }
 
     #[test]
     fn test_message_id() {
-       lazy_eager(
+        lazy_eager("Message-ID: <310@[127.0.0.1]>\r\n", |msg_id| {
-           "Message-ID: <310@[127.0.0.1]>\r\n",
+            assert_eq!(
-           |msg_id| assert_eq!(
                 msg_id,
-               &eager::Field::MessageID(
+                &eager::Field::MessageID(model::MessageId {
-                   model::MessageId { left: "310", right: "127.0.0.1" },
+                    left: "310",
-                )
+                    right: "127.0.0.1"
-            )
+                },)
             )
+        })
     }
 
     #[test]
     fn test_in_reply_to() {
-        lazy_eager(
+        lazy_eager("In-Reply-To: <a@b> <c@example.com>\r\n", |irt| {
-            "In-Reply-To: <a@b> <c@example.com>\r\n",
+            assert_eq!(
-            |irt| assert_eq!(
                 irt,
-                &eager::Field::InReplyTo(
+                &eager::Field::InReplyTo(vec![
-                    vec![
+                    model::MessageId {
-                        model::MessageId { left: "a", right: "b" },
+                        left: "a",
-                        model::MessageId { left: "c", right: "example.com" },
+                        right: "b"
-                    ]
+                    },
-                )
+                    model::MessageId {
-            )
+                        left: "c",
+                        right: "example.com"
+                    },
+                ])
             )
+        })
     }
 
     #[test]
     fn test_references() {
         lazy_eager(
             "References: <1234@local.machine.example> <3456@example.net>\r\n",
-           |refer| assert_eq!(
+            |refer| {
+                assert_eq!(
                     refer,
-               &eager::Field::References(
+                    &eager::Field::References(vec![
-                    vec![
+                        model::MessageId {
-                        model::MessageId { left: "1234", right: "local.machine.example" },
+                            left: "1234",
-                        model::MessageId { left: "3456", right: "example.net" },
+                            right: "local.machine.example"
-                    ]
+                        },
-                )
+                        model::MessageId {
+                            left: "3456",
+                            right: "example.net"
+                        },
+                    ])
                 )
+            },
         )
     }
 
     #[test]
     fn test_subject() {
-       lazy_eager(
+        lazy_eager("Subject: Aérogramme\r\n", |subject| {
-           "Subject: Aérogramme\r\n",
+            assert_eq!(
-           |subject| assert_eq!(
                 subject,
                 &eager::Field::Subject(misc_token::Unstructured("Aérogramme".into()))
             )
-        )
+        })
     }
 
     #[test]
     fn test_comments() {
-       lazy_eager(
+        lazy_eager("Comments: 😛 easter egg!\r\n", |comments| {
-           "Comments: 😛 easter egg!\r\n",
+            assert_eq!(
-           |comments| assert_eq!(
                 comments,
                 &eager::Field::Comments(misc_token::Unstructured("😛 easter egg!".into())),
             )
-        )
+        })
     }
 
     #[test]
     fn test_keywords() {
         lazy_eager(
             "Keywords: fantasque, farfelu, fanfreluche\r\n",
-           |keywords| assert_eq!(
+            |keywords| {
+                assert_eq!(
                     keywords,
                     &eager::Field::Keywords(misc_token::PhraseList(vec![
                         "fantasque".into(),
@@ -271,6 +295,7 @@ mod tests {
                         "fanfreluche".into()
                     ]))
                 )
+            },
         )
     }
 
@@ -308,5 +333,4 @@ Hello world"#;
             );
         }
         */
-    
 }

src/multipass/field_lazy.rs

@@ -27,7 +27,8 @@ mod tests {
 
     #[test]
     fn test_field_name() {
-        assert_eq!(new(&extract_fields::Parsed {
+        assert_eq!(
+            new(&extract_fields::Parsed {
                 fields: vec![
                     "From: hello@world.com,\r\n\talice@wonderlands.com\r\n",
                     "Date: 12 Mar 1997 07:33:25 Z\r\n",
@@ -36,10 +37,13 @@ mod tests {
             }),
             Parsed {
                 fields: vec![
-                lazy::Field::From(lazy::MailboxList("hello@world.com,\r\n\talice@wonderlands.com\r\n")),
+                    lazy::Field::From(lazy::MailboxList(
+                        "hello@world.com,\r\n\talice@wonderlands.com\r\n"
+                    )),
                     lazy::Field::Date(lazy::DateTime("12 Mar 1997 07:33:25 Z\r\n")),
                 ],
                 body: b"Hello world!",
-        });
+            }
+        );
     }
 }

src/multipass/guess_charset.rs

@@ -1,10 +1,10 @@
-use std::borrow::Cow;
 use chardetng::EncodingDetector;
 use encoding_rs::Encoding;
+use std::borrow::Cow;
 
 use crate::error::IMFError;
-use crate::multipass::segment;
 use crate::multipass::extract_fields;
+use crate::multipass::segment;
 
 #[derive(Debug, PartialEq)]
 pub struct Parsed<'a> {
@@ -30,7 +30,7 @@ pub fn new<'a>(seg: &'a segment::Parsed<'a>) -> Parsed<'a> {
         header,
         encoding,
         malformed,
-        body: seg.body 
+        body: seg.body,
     }
 }
 
@@ -50,13 +50,13 @@ mod tests {
             new(&segment::Parsed {
                 body: b"Hello world!",
                 header: b"From: hello@world.com\r\nDate: 12 Mar 1997 07:33:25 Z\r\n",
-                }
+            }),
-            ),
             Parsed {
                 header: "From: hello@world.com\r\nDate: 12 Mar 1997 07:33:25 Z\r\n".into(),
                 encoding: encoding_rs::UTF_8,
                 malformed: false,
                 body: b"Hello world!",
-            });
+            }
+        );
     }
 }

src/multipass/header_section.rs

@@ -23,7 +23,8 @@ mod tests {
 
     #[test]
     fn test_section() {
-        assert_eq!(new(&field_eager::Parsed {
+        assert_eq!(
+            new(&field_eager::Parsed {
                 fields: vec![
                     eager::Field::From(vec![
                         model::MailboxRef {
@@ -69,14 +70,17 @@ mod tests {
                         },
                     ],
 
-                date: Some(&FixedOffset::east_opt(0)
+                    date: Some(
+                        &FixedOffset::east_opt(0)
                             .unwrap()
                             .with_ymd_and_hms(1997, 03, 12, 7, 33, 25)
-                    .unwrap()),
+                            .unwrap()
+                    ),
 
                     ..Default::default()
                 },
                 body: b"Hello world!",
-        });
+            }
+        );
     }
 }

src/multipass/mod.rs

@@ -1,6 +1,6 @@
-pub mod segment;
-pub mod guess_charset;
 pub mod extract_fields;
-pub mod field_lazy;
 pub mod field_eager;
+pub mod field_lazy;
+pub mod guess_charset;
 pub mod header_section;
+pub mod segment;

src/multipass/segment.rs

@@ -1,14 +1,14 @@
 use nom::{
-    IResult,
     branch::alt,
     bytes::complete::{is_not, tag},
     combinator::recognize,
-    sequence::{pair, terminated},
     multi::many0,
+    sequence::{pair, terminated},
+    IResult,
 };
 
-use crate::multipass::guess_charset;
 use crate::error::IMFError;
+use crate::multipass::guess_charset;
 
 #[derive(Debug, PartialEq)]
 pub struct Parsed<'a> {
@@ -21,10 +21,7 @@ const LF: u8 = 0x0A;
 const CRLF: &[u8] = &[CR, LF];
 
 pub fn new<'a>(buffer: &'a [u8]) -> Result<Parsed<'a>, IMFError<'a>> {
-    terminated(
+    terminated(recognize(many0(line)), obs_crlf)(buffer)
-        recognize(many0(line)), 
-        obs_crlf
-    )(buffer)
         .map_err(|e| IMFError::Segment(e))
         .map(|(body, header)| Parsed { header, body })
 }
@@ -36,10 +33,7 @@ impl<'a> Parsed<'a> {
 }
 
 fn line(input: &[u8]) -> IResult<&[u8], (&[u8], &[u8])> {
-    pair(
+    pair(is_not(CRLF), obs_crlf)(input)
-        is_not(CRLF), 
-        obs_crlf,
-    )(input)
 }
 
 fn obs_crlf(input: &[u8]) -> IResult<&[u8], &[u8]> {

src/parse.rs

@@ -1,10 +1,12 @@
-use imf_codec::multipass::segment;
 use imf_codec::fragments::section::Section;
+use imf_codec::multipass::segment;
 use std::io;
 use std::io::Read;
 
 fn parser<'a, F>(input: &'a [u8], func: F) -> ()
-where F: FnOnce(&Section) -> () {
+where
+    F: FnOnce(&Section) -> (),
+{
     let seg = segment::new(input).unwrap();
     let charset = seg.charset();
     let fields = charset.fields().unwrap();

tests/enron.rs

@@ -1,13 +1,15 @@
+use imf_codec::fragments::section;
+use imf_codec::multipass;
 use std::collections::HashSet;
-use std::path::PathBuf;
 use std::fs::File;
 use std::io::Read;
-use imf_codec::multipass;
+use std::path::PathBuf;
-use imf_codec::fragments::section;
 use walkdir::WalkDir;
 
 fn parser<'a, F>(input: &'a [u8], func: F) -> ()
-where F: FnOnce(&section::Section) -> () {
+where
+    F: FnOnce(&section::Section) -> (),
+{
     let seg = multipass::segment::new(input).unwrap();
     let charset = seg.charset();
     let fields = charset.fields().unwrap();
@@ -28,17 +30,12 @@ fn test_enron500k() {
 
     let known_bad_fields = HashSet::from([
         "white-s/calendar/113.",       // To: east <7..>
-                                         
         "skilling-j/inbox/223.",       // From: pep <performance.>
-                                         
         "jones-t/all_documents/9806.", // To: <"tibor.vizkelety":@enron.com>
         "jones-t/notes_inbox/3303.",   // To: <"tibor.vizkelety":@enron.com>
-                                             
         "lokey-t/calendar/33.",        // A second Date entry for the calendar containing
         // Date:       Monday, March 12
-                                        
         "zipper-a/inbox/199.",                       // To: e-mail <mari.>
-
         "dasovich-j/deleted_items/128.",             // To: f62489 <g>
         "dasovich-j/all_documents/677.",             // To: w/assts <govt.>
         "dasovich-j/all_documents/8984.",            // To: <"ft.com.users":@enron.com>
@@ -54,7 +51,6 @@ fn test_enron500k() {
         "dasovich-j/notes_inbox/1706.",              // To: <"ft.com.users":@enron.com>
         "dasovich-j/notes_inbox/1489.",              // To: <"economist.com.readers":@enron.com>
         "dasovich-j/notes_inbox/5.",                 // To: w/assts <govt.>
-
         "kaminski-v/sites/19.",                      // To: <"the.desk":@enron.com>
         "kaminski-v/sites/1.",                       // To: <"the.desk":@enron.com>
         "kaminski-v/discussion_threads/5082.",       // To: <"ft.com.users":@enron.com>
@@ -71,7 +67,6 @@ fn test_enron500k() {
         "kaminski-v/technical/7.",        // To: <"the.desk":@enron.com>
         "kaminski-v/notes_inbox/140.", // To: dogs <breakthrough.>, cats <breaktkhrough.>, risk <breakthrough.>,\r\n\tleaders <breaktkhrough.>
         "kaminski-v/notes_inbox/95.", // To + CC failed: cats <breaktkhrough.>, risk <breakthrough.>, leaders <breaktkhrough.>
-
         "kean-s/archiving/untitled/1232.", // To: w/assts <govt.>, mark.palmer@enron.com, karen.denne@enron.com
         "kean-s/archiving/untitled/1688.", // To: w/assts <govt.>
         "kean-s/sent/198.", // To: w/assts <govt.>, mark.palmer@enron.com, karen.denne@enron.com
@@ -83,7 +78,6 @@ fn test_enron500k() {
         "kean-s/all_documents/640.",      // To: w/assts <govt.>
         "kean-s/all_documents/1095.",     // To: w/assts <govt.>
         "kean-s/attachments/2030.",       // To: w/assts <govt.>
-
         "williams-w3/operations_committee_isas/10.", // To: z34655 <m>
     ]);
 
@@ -92,7 +86,10 @@ fn test_enron500k() {
     ]);
 
     let mut i = 0;
-    for entry in WalkDir::new(d.as_path()).into_iter().filter_map(|file| file.ok()) {
+    for entry in WalkDir::new(d.as_path())
+        .into_iter()
+        .filter_map(|file| file.ok())
+    {
         if entry.metadata().unwrap().is_file() {
             let mail_path = entry.path();
             let suffix = &mail_path.to_str().unwrap()[prefix_sz..];

tests/known.rs

@@ -1,10 +1,12 @@
 use chrono::{FixedOffset, TimeZone};
-use std::collections::HashMap;
+use imf_codec::fragments::{misc_token, model, section, trace};
 use imf_codec::multipass;
-use imf_codec::fragments::{model, misc_token, trace, section};
+use std::collections::HashMap;
 
 fn parser<'a, F>(input: &'a [u8], func: F) -> ()
-where F: FnOnce(&section::Section) -> () {
+where
+    F: FnOnce(&section::Section) -> (),
+{
     let seg = multipass::segment::new(input).unwrap();
     let charset = seg.charset();
     let fields = charset.fields().unwrap();
@@ -48,29 +50,35 @@ References: <1234@local.machine.example>
 Unknown: unknown
 
 This is a reply to your hello.
-"#.as_bytes();
+"#
-    parser(fullmail, |parsed_section| 
+    .as_bytes();
+    parser(fullmail, |parsed_section| {
         assert_eq!(
             parsed_section,
             &section::Section {
-                date: Some(&FixedOffset::east_opt(2 * 3600)
+                date: Some(
+                    &FixedOffset::east_opt(2 * 3600)
                         .unwrap()
                         .with_ymd_and_hms(2023, 06, 13, 10, 01, 10)
-                           .unwrap()),
+                        .unwrap()
+                ),
 
-                from: vec![&model::MailboxRef {
+                from: vec![
+                    &model::MailboxRef {
                         name: Some("Mary Smith".into()),
                         addrspec: model::AddrSpec {
                             local_part: "mary".into(),
                             domain: "example.net".into(),
                         }
-                }, &model::MailboxRef {
+                    },
+                    &model::MailboxRef {
                         name: Some("Alan".into()),
                         addrspec: model::AddrSpec {
                             local_part: "alan".into(),
                             domain: "example".into(),
                         }
-                }],
+                    }
+                ],
 
                 sender: Some(&model::MailboxRef {
                     name: None,
@@ -106,33 +114,41 @@ This is a reply to your hello.
 
                 bcc: vec![],
 
-                msg_id: Some(&model::MessageId { left: "3456", right: "example.net" }),
+                msg_id: Some(&model::MessageId {
-                in_reply_to: vec![&model::MessageId { left: "1234", right: "local.machine.example" }],
+                    left: "3456",
-                references: vec![&model::MessageId { left: "1234", right: "local.machine.example" }],
+                    right: "example.net"
+                }),
+                in_reply_to: vec![&model::MessageId {
+                    left: "1234",
+                    right: "local.machine.example"
+                }],
+                references: vec![&model::MessageId {
+                    left: "1234",
+                    right: "local.machine.example"
+                }],
 
                 subject: Some(&misc_token::Unstructured("Re: Saying Hello".into())),
 
                 comments: vec![
                     &misc_token::Unstructured("A simple message".into()),
                     &misc_token::Unstructured("Not that complicated".into()),
-                    &misc_token::Unstructured("not valid header name but should be accepted by the parser.".into()),
+                    &misc_token::Unstructured(
+                        "not valid header name but should be accepted by the parser.".into()
+                    ),
                 ],
 
                 keywords: vec![
-                    &misc_token::PhraseList(vec![
+                    &misc_token::PhraseList(vec!["hello".into(), "world".into(),]),
-                        "hello".into(), 
+                    &misc_token::PhraseList(vec!["salut".into(), "le".into(), "monde".into(),]),
-                        "world".into(), 
-                    ]),
-                    &misc_token::PhraseList(vec![
-                        "salut".into(), 
-                        "le".into(), 
-                        "monde".into(),
-                    ]),
                 ],
 
-                received: vec![ 
+                received: vec![&trace::ReceivedLog(
-                    &trace::ReceivedLog("from smtp.example.com ([10.83.2.2])\n\tby doradille with LMTP\n\tid xyzabcd\n\t(envelope-from <gitlab@example.com>)\n\tfor <quentin@example.com>")
+                    r#"from smtp.example.com ([10.83.2.2])
-                ],
+	by doradille with LMTP
+	id xyzabcd
+	(envelope-from <gitlab@example.com>)
+	for <quentin@example.com>"#
+                )],
 
                 return_path: vec![&model::MailboxRef {
                     name: None,
@@ -143,7 +159,10 @@ This is a reply to your hello.
                 }],
 
                 optional: HashMap::from([
-                    ("Delivered-To", &misc_token::Unstructured("quentin@example.com".into())),
+                    (
+                        "Delivered-To",
+                        &misc_token::Unstructured("quentin@example.com".into())
+                    ),
                     ("Unknown", &misc_token::Unstructured("unknown".into())),
                 ]),
 
@@ -155,5 +174,5 @@ This is a reply to your hello.
                 ],
             }
         )
-    )
+    })
 }