msglist: highlight marked messages

Note that, until we get color configuration, this means that the user *must*
have the %Z verb in the index format else it'll be horribly confusing
as no visual indication is provided

config/aerc.conf.in

@@ -7,7 +7,7 @@
 # with mutt's printf-like syntax.
 #
 # Default:
-index-format=%D %-17.17n %s
+index-format=%D %-17.17n %Z %s
 
 #
 # See time.Time#Format at https://godoc.org/time#Time.Format

config/triggers.go

@@ -39,7 +39,7 @@ func (trig *TriggersConfig) ExecNewEmail(account *AccountConfig,
 			formatstr, args, err := format.ParseMessageFormat(
 				account.From,
 				part,
-				conf.Ui.TimestampFormat, account.Name, 0, msg)
+				conf.Ui.TimestampFormat, account.Name, 0, msg, false)
 			if err != nil {
 				return "", err
 			}

doc/aerc-config.5.scd

@@ -78,7 +78,7 @@ These options are configured in the *[ui]* section of aerc.conf.
 |  %v
 :  sender first name (e.g. "Alex" in "Alex Smith <smith@example.net>")
 |  %Z
-:  flags (O=old, N=new, r=answered, D=deleted, !=flagged)
+:  flags (O=old, N=new, r=answered, D=deleted, !=flagged, \*=marked)
 
 *timestamp-format*
 	See time.Time#Format at https://godoc.org/time#Time.Format

lib/format/format.go

@@ -22,7 +22,8 @@ func parseAddress(address string) *gomail.Address {
 func ParseMessageFormat(
 	fromAddress string,
 	format string, timestampformat string,
-	accountName string, number int, msg *models.MessageInfo) (string,
+	accountName string, number int, msg *models.MessageInfo,
+	marked bool) (string,
 	[]interface{}, error) {
 	retval := make([]byte, 0, len(format))
 	var args []interface{}
@@ -202,6 +203,7 @@ func ParseMessageFormat(
 			var readReplyFlag = ""
 			var delFlag = ""
 			var flaggedFlag = ""
+			var markedFlag = ""
 			seen := false
 			recent := false
 			answered := false
@@ -233,8 +235,11 @@ func ParseMessageFormat(
 					readReplyFlag = "O" // message is old
 				}
 			}
+			if marked {
+				markedFlag = "*"
+			}
 			retval = append(retval, '3', 's')
-			args = append(args, readReplyFlag+delFlag+flaggedFlag)
+			args = append(args, readReplyFlag+delFlag+flaggedFlag+markedFlag)
 
 		// Move the below cases to proper alphabetical positions once
 		// implemented

widgets/msglist.go

@@ -109,7 +109,7 @@ func (ml *MessageList) Draw(ctx *ui.Context) {
 		fmtStr, args, err := format.ParseMessageFormat(
 			ml.aerc.SelectedAccount().acct.From,
 			ml.conf.Ui.IndexFormat,
-			ml.conf.Ui.TimestampFormat, "", i, msg)
+			ml.conf.Ui.TimestampFormat, "", i, msg, store.IsMarked(uid))
 		if err != nil {
 			ctx.Printf(0, row, style, "%v", err)
 		} else {