reformat code

src/bayou.rs

@@ -442,7 +442,12 @@ impl K2vWatch {
         let propagate_local_update = Notify::new();
         let learnt_remote_update = Arc::new(Notify::new());
 
-        let watch = Arc::new(K2vWatch { target, rx, propagate_local_update, learnt_remote_update  });
+        let watch = Arc::new(K2vWatch {
+            target,
+            rx,
+            propagate_local_update,
+            learnt_remote_update,
+        });
 
         tokio::spawn(Self::background_task(Arc::downgrade(&watch), storage, tx));
 
@@ -462,7 +467,8 @@ impl K2vWatch {
         while let Some(this) = Weak::upgrade(&self_weak) {
             tracing::debug!(
                 "bayou k2v watch bg loop iter ({}, {})",
-                this.target.uid.shard, this.target.uid.sort
+                this.target.uid.shard,
+                this.target.uid.sort
             );
             tokio::select!(
                 // Needed to exit: will force a loop iteration every minutes,

src/imap/attributes.rs

@@ -1,5 +1,5 @@
-use imap_codec::imap_types::fetch::{MacroOrMessageDataItemNames, MessageDataItemName, Section};
 use imap_codec::imap_types::command::FetchModifier;
+use imap_codec::imap_types::fetch::{MacroOrMessageDataItemNames, MessageDataItemName, Section};
 
 /// Internal decisions based on fetched attributes
 /// passed by the client
@@ -8,7 +8,11 @@ pub struct AttributesProxy {
     pub attrs: Vec<MessageDataItemName<'static>>,
 }
 impl AttributesProxy {
-    pub fn new(attrs: &MacroOrMessageDataItemNames<'static>, modifiers: &[FetchModifier], is_uid_fetch: bool) -> Self {
+    pub fn new(
+        attrs: &MacroOrMessageDataItemNames<'static>,
+        modifiers: &[FetchModifier],
+        is_uid_fetch: bool,
+    ) -> Self {
         // Expand macros
         let mut fetch_attrs = match attrs {
             MacroOrMessageDataItemNames::Macro(m) => {
@@ -44,14 +48,13 @@ impl AttributesProxy {
     }
 
     pub fn is_enabling_condstore(&self) -> bool {
-        self.attrs.iter().any(|x| {
+        self.attrs
-            matches!(x, MessageDataItemName::ModSeq)
+            .iter()
-        })
+            .any(|x| matches!(x, MessageDataItemName::ModSeq))
     }
 
     pub fn need_body(&self) -> bool {
-        self.attrs.iter().any(|x| {
+        self.attrs.iter().any(|x| match x {
-            match x {
             MessageDataItemName::Body
             | MessageDataItemName::Rfc822
             | MessageDataItemName::Rfc822Text
@@ -69,7 +72,6 @@ impl AttributesProxy {
             },
             MessageDataItemName::BodyExt { .. } => true,
             _ => false,
-            }
         })
     }
 }

src/imap/capability.rs

@@ -1,4 +1,4 @@
-use imap_codec::imap_types::command::{FetchModifier, StoreModifier, SelectExamineModifier};
+use imap_codec::imap_types::command::{FetchModifier, SelectExamineModifier, StoreModifier};
 use imap_codec::imap_types::core::NonEmptyVec;
 use imap_codec::imap_types::extensions::enable::{CapabilityEnable, Utf8Kind};
 use imap_codec::imap_types::response::Capability;
@@ -72,7 +72,6 @@ impl ClientStatus {
     }
 }
 
-
 pub struct ClientCapability {
     pub condstore: ClientStatus,
     pub utf8kind: Option<Utf8Kind>,
@@ -100,13 +99,19 @@ impl ClientCapability {
     }
 
     pub fn fetch_modifiers_enable(&mut self, mods: &[FetchModifier]) {
-        if mods.iter().any(|x| matches!(x, FetchModifier::ChangedSince(..))) {
+        if mods
+            .iter()
+            .any(|x| matches!(x, FetchModifier::ChangedSince(..)))
+        {
             self.enable_condstore()
         }
     }
 
     pub fn store_modifiers_enable(&mut self, mods: &[StoreModifier]) {
-        if mods.iter().any(|x| matches!(x, StoreModifier::UnchangedSince(..))) {
+        if mods
+            .iter()
+            .any(|x| matches!(x, StoreModifier::UnchangedSince(..)))
+        {
             self.enable_condstore()
         }
     }

src/imap/command/selected.rs

@@ -1,5 +1,5 @@
-use std::sync::Arc;
 use std::num::NonZeroU64;
+use std::sync::Arc;
 
 use anyhow::Result;
 use imap_codec::imap_types::command::{Command, CommandBody, FetchModifier, StoreModifier};
@@ -11,12 +11,12 @@ use imap_codec::imap_types::response::{Code, CodeOther};
 use imap_codec::imap_types::search::SearchKey;
 use imap_codec::imap_types::sequence::SequenceSet;
 
+use crate::imap::attributes::AttributesProxy;
 use crate::imap::capability::{ClientCapability, ServerCapability};
 use crate::imap::command::{anystate, authenticated, MailboxName};
 use crate::imap::flow;
 use crate::imap::mailbox_view::{MailboxView, UpdateParameters};
 use crate::imap::response::Response;
-use crate::imap::attributes::AttributesProxy;
 use crate::mail::user::User;
 
 pub struct SelectedContext<'a> {
@@ -50,7 +50,10 @@ pub async fn dispatch<'a>(
             macro_or_item_names,
             modifiers,
             uid,
-        } => ctx.fetch(sequence_set, macro_or_item_names, modifiers, uid).await,
+        } => {
+            ctx.fetch(sequence_set, macro_or_item_names, modifiers, uid)
+                .await
+        }
         CommandBody::Search {
             charset,
             criteria,
@@ -64,7 +67,10 @@ pub async fn dispatch<'a>(
             flags,
             modifiers,
             uid,
-        } => ctx.store(sequence_set, kind, response, flags, modifiers, uid).await,
+        } => {
+            ctx.store(sequence_set, kind, response, flags, modifiers, uid)
+                .await
+        }
         CommandBody::Copy {
             sequence_set,
             mailbox,
@@ -80,12 +86,13 @@ pub async fn dispatch<'a>(
         CommandBody::Unselect => ctx.unselect().await,
 
         // IDLE extension (rfc2177)
-        CommandBody::Idle => {
+        CommandBody::Idle => Ok((
-            Ok((
+            Response::build()
-                Response::build().to_req(ctx.req).message("DUMMY command due to anti-pattern in the code").ok()?,
+                .to_req(ctx.req)
+                .message("DUMMY command due to anti-pattern in the code")
+                .ok()?,
             flow::Transition::Idle(ctx.req.tag.clone(), tokio::sync::Notify::new()),
-            ))
+        )),
-        }
 
         // In selected mode, we fallback to authenticated when needed
         _ => {
@@ -148,10 +155,14 @@ impl<'a> SelectedContext<'a> {
         modifiers.iter().for_each(|m| match m {
             FetchModifier::ChangedSince(val) => {
                 changed_since = Some(*val);
-            },
+            }
         });
 
-        match self.mailbox.fetch(sequence_set, &ap, changed_since, uid).await {
+        match self
+            .mailbox
+            .fetch(sequence_set, &ap, changed_since, uid)
+            .await
+        {
             Ok(resp) => {
                 // Capabilities enabling logic only on successful command
                 // (according to my understanding of the spec)
@@ -167,7 +178,7 @@ impl<'a> SelectedContext<'a> {
                         .ok()?,
                     flow::Transition::None,
                 ))
-            },
+            }
             Err(e) => Ok((
                 Response::build()
                     .to_req(self.req)
@@ -214,7 +225,7 @@ impl<'a> SelectedContext<'a> {
 
     async fn expunge(self) -> Result<(Response<'static>, flow::Transition)> {
         if let Some(failed) = self.fail_read_only() {
-            return Ok((failed, flow::Transition::None))
+            return Ok((failed, flow::Transition::None));
         }
 
         let tag = self.req.tag.clone();
@@ -240,14 +251,14 @@ impl<'a> SelectedContext<'a> {
         uid: &bool,
     ) -> Result<(Response<'static>, flow::Transition)> {
         if let Some(failed) = self.fail_read_only() {
-            return Ok((failed, flow::Transition::None))
+            return Ok((failed, flow::Transition::None));
         }
 
         let mut unchanged_since: Option<NonZeroU64> = None;
         modifiers.iter().for_each(|m| match m {
             StoreModifier::UnchangedSince(val) => {
                 unchanged_since = Some(*val);
-            },
+            }
         });
 
         let (data, modified) = self
@@ -260,21 +271,26 @@ impl<'a> SelectedContext<'a> {
             .message("STORE completed")
             .set_body(data);
 
-
         match modified[..] {
             [] => (),
             [_head, ..] => {
-                let modified_str = format!("MODIFIED {}", modified.into_iter().map(|x| x.to_string()).collect::<Vec<_>>().join(","));
+                let modified_str = format!(
-                ok_resp = ok_resp.code(Code::Other(CodeOther::unvalidated(modified_str.into_bytes())));
+                    "MODIFIED {}",
-            },
+                    modified
+                        .into_iter()
+                        .map(|x| x.to_string())
+                        .collect::<Vec<_>>()
+                        .join(",")
+                );
+                ok_resp = ok_resp.code(Code::Other(CodeOther::unvalidated(
+                    modified_str.into_bytes(),
+                )));
+            }
         };
 
-
         self.client_capabilities.store_modifiers_enable(modifiers);
 
-        Ok((ok_resp.ok()?,
+        Ok((ok_resp.ok()?, flow::Transition::None))
-            flow::Transition::None,
-        ))
     }
 
     async fn copy(
@@ -285,7 +301,7 @@ impl<'a> SelectedContext<'a> {
     ) -> Result<(Response<'static>, flow::Transition)> {
         //@FIXME Could copy be valid in EXAMINE mode?
         if let Some(failed) = self.fail_read_only() {
-            return Ok((failed, flow::Transition::None))
+            return Ok((failed, flow::Transition::None));
         }
 
         let name: &str = MailboxName(mailbox).try_into()?;
@@ -341,7 +357,7 @@ impl<'a> SelectedContext<'a> {
         uid: &bool,
     ) -> Result<(Response<'static>, flow::Transition)> {
         if let Some(failed) = self.fail_read_only() {
-            return Ok((failed, flow::Transition::None))
+            return Ok((failed, flow::Transition::None));
         }
 
         let name: &str = MailboxName(mailbox).try_into()?;
@@ -395,12 +411,13 @@ impl<'a> SelectedContext<'a> {
     fn fail_read_only(&self) -> Option<Response<'static>> {
         match self.perm {
             flow::MailboxPerm::ReadWrite => None,
-            flow::MailboxPerm::ReadOnly => {
+            flow::MailboxPerm::ReadOnly => Some(
-               Some(Response::build()
+                Response::build()
                     .to_req(self.req)
                     .message("Write command are forbidden while exmining mailbox")
-                   .no().unwrap())
+                    .no()
-            },
+                    .unwrap(),
+            ),
         }
     }
 }

src/imap/flow.rs

@@ -3,9 +3,9 @@ use std::fmt;
 use std::sync::Arc;
 use tokio::sync::Notify;
 
-use imap_codec::imap_types::core::Tag;
 use crate::imap::mailbox_view::MailboxView;
 use crate::mail::user::User;
+use imap_codec::imap_types::core::Tag;
 
 #[derive(Debug)]
 pub enum Error {
@@ -22,7 +22,13 @@ pub enum State {
     NotAuthenticated,
     Authenticated(Arc<User>),
     Selected(Arc<User>, MailboxView, MailboxPerm),
-    Idle(Arc<User>, MailboxView, MailboxPerm, Tag<'static>, Arc<Notify>),
+    Idle(
+        Arc<User>,
+        MailboxView,
+        MailboxPerm,
+        Tag<'static>,
+        Arc<Notify>,
+    ),
     Logout,
 }
 impl fmt::Display for State {
@@ -77,23 +83,18 @@ impl State {
         let new_state = match (std::mem::replace(self, State::Logout), tr) {
             (s, Transition::None) => s,
             (State::NotAuthenticated, Transition::Authenticate(u)) => State::Authenticated(u),
-            (
+            (State::Authenticated(u) | State::Selected(u, _, _), Transition::Select(m, p)) => {
-                State::Authenticated(u) | State::Selected(u, _, _),
+                State::Selected(u, m, p)
-                Transition::Select(m, p),
-            ) => State::Selected(u, m, p),
-            (State::Selected(u, _, _) , Transition::Unselect) => {
-                State::Authenticated(u.clone())
             }
+            (State::Selected(u, _, _), Transition::Unselect) => State::Authenticated(u.clone()),
             (State::Selected(u, m, p), Transition::Idle(t, s)) => {
                 State::Idle(u, m, p, t, Arc::new(s))
-            },
+            }
-            (State::Idle(u, m, p, _, _), Transition::UnIdle) => {
+            (State::Idle(u, m, p, _, _), Transition::UnIdle) => State::Selected(u, m, p),
-                State::Selected(u, m, p)
-            },
             (_, Transition::Logout) => State::Logout,
             (s, t) => {
                 tracing::error!(state=%s, transition=%t, "forbidden transition");
-                return Err(Error::ForbiddenTransition)
+                return Err(Error::ForbiddenTransition);
             }
         };
         *self = new_state;

src/imap/mailbox_view.rs

@@ -1,6 +1,6 @@
+use std::collections::HashSet;
 use std::num::{NonZeroU32, NonZeroU64};
 use std::sync::Arc;
-use std::collections::HashSet;
 
 use anyhow::{anyhow, Error, Result};
 
@@ -13,11 +13,11 @@ use imap_codec::imap_types::response::{Code, CodeOther, Data, Status};
 use imap_codec::imap_types::search::SearchKey;
 use imap_codec::imap_types::sequence::SequenceSet;
 
-use crate::mail::unique_ident::UniqueIdent;
 use crate::mail::mailbox::Mailbox;
 use crate::mail::query::QueryScope;
 use crate::mail::snapshot::FrozenMailbox;
 use crate::mail::uidindex::{ImapUid, ImapUidvalidity, ModSeq};
+use crate::mail::unique_ident::UniqueIdent;
 
 use crate::imap::attributes::AttributesProxy;
 use crate::imap::flags;
@@ -130,11 +130,9 @@ impl MailboxView {
                 let new_mail = new_snapshot.table.get(uuid);
                 if old_mail.is_some() && old_mail != new_mail {
                     if let Some((uid, modseq, flags)) = new_mail {
-                        let mut items = vec![
+                        let mut items = vec![MessageDataItem::Flags(
-                            MessageDataItem::Flags(
                             flags.iter().filter_map(|f| flags::from_str(f)).collect(),
-                            ),
+                        )];
-                        ];
 
                         if params.with_uid {
                             items.push(MessageDataItem::Uid(*uid));
@@ -188,8 +186,8 @@ impl MailboxView {
         let flags = flags.iter().map(|x| x.to_string()).collect::<Vec<_>>();
 
         let idx = self.index()?;
-        let (editable, in_conflict) = idx
+        let (editable, in_conflict) =
-            .fetch_unchanged_since(sequence_set, unchanged_since, *is_uid_store)?;
+            idx.fetch_unchanged_since(sequence_set, unchanged_since, *is_uid_store)?;
 
         for mi in editable.iter() {
             match kind {
@@ -215,17 +213,26 @@ impl MailboxView {
             _ => in_conflict.into_iter().map(|midx| midx.i).collect(),
         };
 
-        let summary = self.update(UpdateParameters {
+        let summary = self
+            .update(UpdateParameters {
                 with_uid: *is_uid_store,
                 with_modseq: unchanged_since.is_some(),
                 silence,
-        }).await?;
+            })
+            .await?;
 
         Ok((summary, conflict_id_or_uid))
     }
 
     pub async fn idle_sync(&mut self) -> Result<Vec<Body<'static>>> {
-        self.internal.mailbox.notify().await.upgrade().ok_or(anyhow!("test"))?.notified().await;
+        self.internal
+            .mailbox
+            .notify()
+            .await
+            .upgrade()
+            .ok_or(anyhow!("test"))?
+            .notified()
+            .await;
         self.internal.mailbox.opportunistic_sync().await?;
         self.update(UpdateParameters::default()).await
     }
@@ -300,10 +307,12 @@ impl MailboxView {
             ret.push((mi.uid, dest_uid));
         }
 
-        let update = self.update(UpdateParameters {
+        let update = self
+            .update(UpdateParameters {
                 with_uid: *is_uid_copy,
                 ..UpdateParameters::default()
-        }).await?;
+            })
+            .await?;
 
         Ok((to_state.uidvalidity, ret, update))
     }
@@ -327,11 +336,7 @@ impl MailboxView {
         };
         tracing::debug!("Query scope {:?}", query_scope);
         let idx = self.index()?;
-        let mail_idx_list = idx.fetch_changed_since(
+        let mail_idx_list = idx.fetch_changed_since(sequence_set, changed_since, *is_uid_fetch)?;
-            sequence_set, 
-            changed_since, 
-            *is_uid_fetch
-        )?;
 
         // [2/6] Fetch the emails
         let uuids = mail_idx_list
@@ -420,12 +425,19 @@ impl MailboxView {
         let maybe_modseq = match is_modseq {
             true => {
                 let final_selection = kept_idx.iter().chain(kept_query.iter());
-                final_selection.map(|in_idx| in_idx.modseq).max().map(|r| NonZeroU64::try_from(r)).transpose()?
+                final_selection
-            },
+                    .map(|in_idx| in_idx.modseq)
+                    .max()
+                    .map(|r| NonZeroU64::try_from(r))
+                    .transpose()?
+            }
             _ => None,
         };
 
-        Ok((vec![Body::Data(Data::Search(selection_fmt, maybe_modseq))], is_modseq))
+        Ok((
+            vec![Body::Data(Data::Search(selection_fmt, maybe_modseq))],
+            is_modseq,
+        ))
     }
 
     // ----
@@ -470,7 +482,9 @@ impl MailboxView {
     pub(crate) fn highestmodseq_status(&self) -> Result<Body<'static>> {
         Ok(Body::Status(Status::ok(
             None,
-            Some(Code::Other(CodeOther::unvalidated(format!("HIGHESTMODSEQ {}", self.highestmodseq()).into_bytes()))),
+            Some(Code::Other(CodeOther::unvalidated(
+                format!("HIGHESTMODSEQ {}", self.highestmodseq()).into_bytes(),
+            ))),
             "Highest",
         )?))
     }

src/imap/mod.rs

@@ -15,23 +15,23 @@ mod session;
 
 use std::net::SocketAddr;
 
-use anyhow::{Result, bail};
+use anyhow::{bail, Result};
 use futures::stream::{FuturesUnordered, StreamExt};
 
 use tokio::net::TcpListener;
-use tokio::sync::watch;
 use tokio::sync::mpsc;
+use tokio::sync::watch;
 
+use imap_codec::imap_types::response::{Code, CommandContinuationRequest, Response, Status};
 use imap_codec::imap_types::{core::Text, response::Greeting};
 use imap_flow::server::{ServerFlow, ServerFlowEvent, ServerFlowOptions};
 use imap_flow::stream::AnyStream;
-use imap_codec::imap_types::response::{Code, Response, CommandContinuationRequest, Status};
 
-use crate::imap::response::{Body, ResponseOrIdle};
-use crate::imap::session::Instance;
-use crate::imap::request::Request;
 use crate::config::ImapConfig;
 use crate::imap::capability::ServerCapability;
+use crate::imap::request::Request;
+use crate::imap::response::{Body, ResponseOrIdle};
+use crate::imap::session::Instance;
 use crate::login::ArcLoginProvider;
 
 /// Server is a thin wrapper to register our Services in BàL
@@ -97,10 +97,10 @@ impl Server {
     }
 }
 
-use tokio::sync::mpsc::*;
-use tokio_util::bytes::BytesMut;
-use tokio::sync::Notify;
 use std::sync::Arc;
+use tokio::sync::mpsc::*;
+use tokio::sync::Notify;
+use tokio_util::bytes::BytesMut;
 enum LoopMode {
     Quit,
     Interactive,
@@ -123,10 +123,10 @@ impl NetLoop {
             Ok(nl) => {
                 tracing::debug!(addr=?addr, "netloop successfully initialized");
                 nl
-            },
+            }
             Err(e) => {
                 tracing::error!(addr=?addr, err=?e, "netloop can not be initialized, closing session");
-                return
+                return;
             }
         };
 
@@ -164,11 +164,20 @@ impl NetLoop {
         tokio::spawn(Self::session(ctx.clone(), cmd_rx, resp_tx));
 
         // Return the object
-        Ok(NetLoop { ctx, server, cmd_tx, resp_rx })
+        Ok(NetLoop {
+            ctx,
+            server,
+            cmd_tx,
+            resp_rx,
+        })
     }
 
     /// Coms with the background session
-    async fn session(ctx: ClientContext, mut cmd_rx: Receiver<Request>, resp_tx: UnboundedSender<ResponseOrIdle>) -> () {
+    async fn session(
+        ctx: ClientContext,
+        mut cmd_rx: Receiver<Request>,
+        resp_tx: UnboundedSender<ResponseOrIdle>,
+    ) -> () {
         let mut session = Instance::new(ctx.login_provider, ctx.server_capabilities);
         loop {
             let cmd = match cmd_rx.recv().await {
@@ -200,7 +209,6 @@ impl NetLoop {
         Ok(())
     }
 
-
     async fn interactive_mode(&mut self) -> Result<LoopMode> {
         tokio::select! {
             // Managing imap_flow stuff

src/imap/response.rs

@@ -1,9 +1,9 @@
-use std::sync::Arc;
 use anyhow::Result;
-use tokio::sync::Notify;
 use imap_codec::imap_types::command::Command;
 use imap_codec::imap_types::core::Tag;
 use imap_codec::imap_types::response::{Code, Data, Status};
+use std::sync::Arc;
+use tokio::sync::Notify;
 
 #[derive(Debug)]
 pub enum Body<'a> {

src/imap/search.rs

@@ -2,7 +2,7 @@ use std::num::{NonZeroU32, NonZeroU64};
 
 use anyhow::Result;
 use imap_codec::imap_types::core::NonEmptyVec;
-use imap_codec::imap_types::search::{SearchKey, MetadataItemSearch};
+use imap_codec::imap_types::search::{MetadataItemSearch, SearchKey};
 use imap_codec::imap_types::sequence::{SeqOrUid, Sequence, SequenceSet};
 
 use crate::imap::index::MailIndex;
@@ -115,7 +115,10 @@ impl<'a> Criteria<'a> {
     pub fn is_modseq(&self) -> bool {
         use SearchKey::*;
         match self.0 {
-            And(and_list) => and_list.as_ref().iter().any(|child| Criteria(child).is_modseq()),
+            And(and_list) => and_list
+                .as_ref()
+                .iter()
+                .any(|child| Criteria(child).is_modseq()),
             Or(left, right) => Criteria(left).is_modseq() || Criteria(right).is_modseq(),
             Not(child) => Criteria(child).is_modseq(),
             ModSeq { .. } => true,
@@ -187,7 +190,10 @@ impl<'a> Criteria<'a> {
             // Sequence logic
             maybe_seq if is_sk_seq(maybe_seq) => is_keep_seq(maybe_seq, midx).into(),
             maybe_flag if is_sk_flag(maybe_flag) => is_keep_flag(maybe_flag, midx).into(),
-            ModSeq { metadata_item , modseq } => is_keep_modseq(metadata_item, modseq, midx).into(),
+            ModSeq {
+                metadata_item,
+                modseq,
+            } => is_keep_modseq(metadata_item, modseq, midx).into(),
 
             // All the stuff we can't evaluate yet
             Bcc(_) | Cc(_) | From(_) | Header(..) | SentBefore(_) | SentOn(_) | SentSince(_)
@@ -225,7 +231,10 @@ impl<'a> Criteria<'a> {
             //@FIXME Reevaluating our previous logic...
             maybe_seq if is_sk_seq(maybe_seq) => is_keep_seq(maybe_seq, &mail_view.in_idx),
             maybe_flag if is_sk_flag(maybe_flag) => is_keep_flag(maybe_flag, &mail_view.in_idx),
-            ModSeq { metadata_item , modseq } => is_keep_modseq(metadata_item, modseq, &mail_view.in_idx).into(),
+            ModSeq {
+                metadata_item,
+                modseq,
+            } => is_keep_modseq(metadata_item, modseq, &mail_view.in_idx).into(),
 
             // Filter on mail meta
             Before(search_naive) => match mail_view.stored_naive_date() {
@@ -473,7 +482,11 @@ fn is_keep_seq(sk: &SearchKey, midx: &MailIndex) -> bool {
     }
 }
 
-fn is_keep_modseq(filter: &Option<MetadataItemSearch>, modseq: &NonZeroU64, midx: &MailIndex) -> bool {
+fn is_keep_modseq(
+    filter: &Option<MetadataItemSearch>,
+    modseq: &NonZeroU64,
+    midx: &MailIndex,
+) -> bool {
     if filter.is_some() {
         tracing::warn!(filter=?filter, "Ignoring search metadata filter as it's not supported yet");
     }

src/imap/session.rs

@@ -1,10 +1,10 @@
-use anyhow::{Result, anyhow, bail};
 use crate::imap::capability::{ClientCapability, ServerCapability};
 use crate::imap::command::{anonymous, authenticated, selected};
 use crate::imap::flow;
 use crate::imap::request::Request;
 use crate::imap::response::{Response, ResponseOrIdle};
 use crate::login::ArcLoginProvider;
+use anyhow::{anyhow, bail, Result};
 use imap_codec::imap_types::command::Command;
 
 //-----
@@ -63,7 +63,6 @@ impl Instance {
         }
     }
 
-
     pub async fn command(&mut self, cmd: Command<'static>) -> ResponseOrIdle {
         // Command behavior is modulated by the state.
         // To prevent state error, we handle the same command in separate code paths.

src/mail/uidindex.rs

@@ -140,8 +140,7 @@ impl BayouState for UidIndex {
                     let bump_uid = new.internalseq.get() - uid.get();
                     let bump_modseq = (new.internalmodseq.get() - modseq.get()) as u32;
                     new.uidvalidity =
-                        NonZeroU32::new(new.uidvalidity.get() + bump_uid + bump_modseq)
+                        NonZeroU32::new(new.uidvalidity.get() + bump_uid + bump_modseq).unwrap();
-                            .unwrap();
                 }
 
                 // Assign the real uid of the email
@@ -179,10 +178,10 @@ impl BayouState for UidIndex {
                 if let Some((uid, email_modseq, existing_flags)) = new.table.get_mut(ident) {
                     // Bump UIDValidity if required
                     if *candidate_modseq < new.internalmodseq {
-                        let bump_modseq = (new.internalmodseq.get() - candidate_modseq.get()) as u32;
+                        let bump_modseq =
+                            (new.internalmodseq.get() - candidate_modseq.get()) as u32;
                         new.uidvalidity =
-                            NonZeroU32::new(new.uidvalidity.get() + bump_modseq)
+                            NonZeroU32::new(new.uidvalidity.get() + bump_modseq).unwrap();
-                                .unwrap();
                     }
 
                     // Add flags to the source of trust and the cache
@@ -205,10 +204,10 @@ impl BayouState for UidIndex {
                 if let Some((uid, email_modseq, existing_flags)) = new.table.get_mut(ident) {
                     // Bump UIDValidity if required
                     if *candidate_modseq < new.internalmodseq {
-                        let bump_modseq = (new.internalmodseq.get() - candidate_modseq.get()) as u32;
+                        let bump_modseq =
+                            (new.internalmodseq.get() - candidate_modseq.get()) as u32;
                         new.uidvalidity =
-                            NonZeroU32::new(new.uidvalidity.get() + bump_modseq)
+                            NonZeroU32::new(new.uidvalidity.get() + bump_modseq).unwrap();
-                                .unwrap();
                     }
 
                     // Remove flags from the source of trust and the cache
@@ -228,10 +227,10 @@ impl BayouState for UidIndex {
                 if let Some((uid, email_modseq, existing_flags)) = new.table.get_mut(ident) {
                     // Bump UIDValidity if required
                     if *candidate_modseq < new.internalmodseq {
-                        let bump_modseq = (new.internalmodseq.get() - candidate_modseq.get()) as u32;
+                        let bump_modseq =
+                            (new.internalmodseq.get() - candidate_modseq.get()) as u32;
                         new.uidvalidity =
-                            NonZeroU32::new(new.uidvalidity.get() + bump_modseq)
+                            NonZeroU32::new(new.uidvalidity.get() + bump_modseq).unwrap();
-                                .unwrap();
                     }
 
                     // Remove flags from the source of trust and the cache
@@ -448,7 +447,12 @@ mod tests {
         {
             let m = UniqueIdent([0x03; 24]);
             let f = vec!["\\Archive".to_string(), "\\Recent".to_string()];
-            let ev = UidIndexOp::MailAdd(m, NonZeroU32::new(1).unwrap(), NonZeroU64::new(1).unwrap(), f);
+            let ev = UidIndexOp::MailAdd(
+                m,
+                NonZeroU32::new(1).unwrap(),
+                NonZeroU64::new(1).unwrap(),
+                f,
+            );
             state = state.apply(&ev);
         }
 

tests/behavior.rs

@@ -1,8 +1,8 @@
 use anyhow::Context;
 
 mod common;
-use crate::common::fragments::*;
 use crate::common::constants::*;
+use crate::common::fragments::*;
 
 fn main() {
     rfc3501_imap4rev1_base();
@@ -23,16 +23,23 @@ fn rfc3501_imap4rev1_base() {
         create_mailbox(imap_socket, Mailbox::Archive).context("created mailbox archive")?;
         // UNSUBSCRIBE IS NOT IMPLEMENTED YET
         //unsubscribe_mailbox(imap_socket).context("unsubscribe from archive")?;
-        let select_res = select(imap_socket, Mailbox::Inbox, SelectMod::None).context("select inbox")?;
+        let select_res =
+            select(imap_socket, Mailbox::Inbox, SelectMod::None).context("select inbox")?;
         assert!(select_res.contains("* 0 EXISTS"));
 
         check(imap_socket).context("check must run")?;
-        status(imap_socket, Mailbox::Archive, StatusKind::UidNext).context("status of archive from inbox")?;
+        status(imap_socket, Mailbox::Archive, StatusKind::UidNext)
+            .context("status of archive from inbox")?;
         lmtp_handshake(lmtp_socket).context("handshake lmtp done")?;
         lmtp_deliver_email(lmtp_socket, Email::Multipart).context("mail delivered successfully")?;
         noop_exists(imap_socket, 1).context("noop loop must detect a new email")?;
 
-        let srv_msg = fetch(imap_socket, Selection::FirstId, FetchKind::Rfc822, FetchMod::None)
+        let srv_msg = fetch(
+            imap_socket,
+            Selection::FirstId,
+            FetchKind::Rfc822,
+            FetchMod::None,
+        )
         .context("fetch rfc822 message, should be our first message")?;
         let orig_email = std::str::from_utf8(EMAIL1)?;
         assert!(srv_msg.contains(orig_email));
@@ -42,7 +49,13 @@ fn rfc3501_imap4rev1_base() {
         append_email(imap_socket, Email::Basic).context("insert email in INBOX")?;
         noop_exists(imap_socket, 2).context("noop loop must detect a new email")?;
         search(imap_socket, SearchKind::Text("OoOoO")).expect("search should return something");
-        store(imap_socket, Selection::FirstId, Flag::Deleted, StoreAction::AddFlags, StoreMod::None)
+        store(
+            imap_socket,
+            Selection::FirstId,
+            Flag::Deleted,
+            StoreAction::AddFlags,
+            StoreMod::None,
+        )
         .context("should add delete flag to the email")?;
         expunge(imap_socket).context("expunge emails")?;
         rename_mailbox(imap_socket, Mailbox::Archive, Mailbox::Drafts)
@@ -63,18 +76,31 @@ fn rfc3691_imapext_unselect() {
 
         capability(imap_socket, Extension::Unselect).context("check server capabilities")?;
         login(imap_socket, Account::Alice).context("login test")?;
-        let select_res = select(imap_socket, Mailbox::Inbox, SelectMod::None).context("select inbox")?;
+        let select_res =
+            select(imap_socket, Mailbox::Inbox, SelectMod::None).context("select inbox")?;
         assert!(select_res.contains("* 0 EXISTS"));
 
         noop_exists(imap_socket, 1).context("noop loop must detect a new email")?;
-        store(imap_socket, Selection::FirstId, Flag::Deleted, StoreAction::AddFlags, StoreMod::None)
+        store(
+            imap_socket,
+            Selection::FirstId,
+            Flag::Deleted,
+            StoreAction::AddFlags,
+            StoreMod::None,
+        )
         .context("add delete flags to the email")?;
         unselect(imap_socket)
             .context("unselect inbox while preserving email with the \\Delete flag")?;
-        let select_res = select(imap_socket, Mailbox::Inbox, SelectMod::None).context("select inbox again")?;
+        let select_res =
+            select(imap_socket, Mailbox::Inbox, SelectMod::None).context("select inbox again")?;
         assert!(select_res.contains("* 1 EXISTS"));
 
-        let srv_msg = fetch(imap_socket, Selection::FirstId, FetchKind::Rfc822, FetchMod::None)
+        let srv_msg = fetch(
+            imap_socket,
+            Selection::FirstId,
+            FetchKind::Rfc822,
+            FetchMod::None,
+        )
         .context("message is still present")?;
         let orig_email = std::str::from_utf8(EMAIL2)?;
         assert!(srv_msg.contains(orig_email));
@@ -111,7 +137,8 @@ fn rfc6851_imapext_move() {
         capability(imap_socket, Extension::Move).context("check server capabilities")?;
         login(imap_socket, Account::Alice).context("login test")?;
         create_mailbox(imap_socket, Mailbox::Archive).context("created mailbox archive")?;
-        let select_res = select(imap_socket, Mailbox::Inbox, SelectMod::None).context("select inbox")?;
+        let select_res =
+            select(imap_socket, Mailbox::Inbox, SelectMod::None).context("select inbox")?;
         assert!(select_res.contains("* 0 EXISTS"));
 
         lmtp_handshake(lmtp_socket).context("handshake lmtp done")?;
@@ -123,7 +150,8 @@ fn rfc6851_imapext_move() {
 
         unselect(imap_socket)
             .context("unselect inbox while preserving email with the \\Delete flag")?;
-        let select_res = select(imap_socket, Mailbox::Archive, SelectMod::None).context("select archive")?;
+        let select_res =
+            select(imap_socket, Mailbox::Archive, SelectMod::None).context("select archive")?;
         assert!(select_res.contains("* 1 EXISTS"));
 
         let srv_msg = fetch(
@@ -131,7 +159,8 @@ fn rfc6851_imapext_move() {
             Selection::FirstId,
             FetchKind::Rfc822,
             FetchMod::None,
-        ).context("check mail exists")?;
+        )
+        .context("check mail exists")?;
         let orig_email = std::str::from_utf8(EMAIL2)?;
         assert!(srv_msg.contains(orig_email));
 
@@ -166,7 +195,8 @@ fn rfc4551_imapext_condstore() {
         login(imap_socket, Account::Alice).context("login test")?;
 
         // RFC 3.1.8.  CONDSTORE Parameter to SELECT and EXAMINE
-        let select_res = select(imap_socket, Mailbox::Inbox, SelectMod::Condstore).context("select inbox")?;
+        let select_res =
+            select(imap_socket, Mailbox::Inbox, SelectMod::Condstore).context("select inbox")?;
         // RFC 3.1.2   New OK Untagged Responses for SELECT and EXAMINE
         assert!(select_res.contains("[HIGHESTMODSEQ 1]"));
 
@@ -175,14 +205,25 @@ fn rfc4551_imapext_condstore() {
         lmtp_deliver_email(lmtp_socket, Email::Basic).context("mail delivered successfully")?;
         lmtp_deliver_email(lmtp_socket, Email::Multipart).context("mail delivered successfully")?;
         noop_exists(imap_socket, 2).context("noop loop must detect a new email")?;
-        let store_res = store(imap_socket, Selection::All, Flag::Important, StoreAction::AddFlags, StoreMod::UnchangedSince(1))?;
+        let store_res = store(
+            imap_socket,
+            Selection::All,
+            Flag::Important,
+            StoreAction::AddFlags,
+            StoreMod::UnchangedSince(1),
+        )?;
         assert!(store_res.contains("[MODIFIED 2]"));
         assert!(store_res.contains("* 1 FETCH (FLAGS (\\Important) MODSEQ (3))"));
         assert!(!store_res.contains("* 2 FETCH"));
         assert_eq!(store_res.lines().count(), 2);
 
         // RFC 3.1.4.  FETCH and UID FETCH Commands
-        let fetch_res = fetch(imap_socket, Selection::All, FetchKind::Rfc822Size, FetchMod::ChangedSince(2))?;
+        let fetch_res = fetch(
+            imap_socket,
+            Selection::All,
+            FetchKind::Rfc822Size,
+            FetchMod::ChangedSince(2),
+        )?;
         assert!(fetch_res.contains("* 1 FETCH (RFC822.SIZE 84 MODSEQ (3))"));
         assert!(!fetch_res.contains("* 2 FETCH"));
         assert_eq!(store_res.lines().count(), 2);

tests/common/fragments.rs

@@ -286,7 +286,12 @@ pub fn noop_exists(imap: &mut TcpStream, must_exists: u32) -> Result<()> {
     }
 }
 
-pub fn fetch(imap: &mut TcpStream, selection: Selection, kind: FetchKind, modifier: FetchMod) -> Result<String> {
+pub fn fetch(
+    imap: &mut TcpStream,
+    selection: Selection,
+    kind: FetchKind,
+    modifier: FetchMod,
+) -> Result<String> {
     let mut buffer: [u8; 65535] = [0; 65535];
 
     let sel_str = match selection {
@@ -367,7 +372,7 @@ pub fn store(
     sel: Selection,
     flag: Flag,
     action: StoreAction,
-    modifier: StoreMod
+    modifier: StoreMod,
 ) -> Result<String> {
     let mut buffer: [u8; 6000] = [0; 6000];