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mu4e: update label handling

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- Fix typos
- Sync up with C++
- Fix cl-pushnew usage
This commit is contained in:
Dirk-Jan C. Binnema
2026-07-23 16:49:01 +03:00
committed by Seth Ladygo
parent 03021df79d
commit 975dbfa367
1 changed files with 13 additions and 16 deletions
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29
mu4e/mu4e-labels.el
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@ -30,13 +30,13 @@
(require 'mu4e-helpers)
(defconst mu4e-label-regex
"[^\"',+/\\`[:cntrl:][:blank:]-][^\"'$,/\\`[:cntrl:][:blank:]]+"
(rx (not (any ?- ?+ ?\" ?' ?$ ?, ?/ ?\\ ?` cntrl blank))
(* (not (any ?\" ?' ?$ ?, ?/ ?\\ ?` cntrl blank))))
"Unanchored regular expression matching a valid label.
Any character is allowed that is not a control-character, a
blank, or a number of special characters. Additionally, the first
character cannot be + or - either.")
;; sadly, the 'rx' macro is not expressive enough, pre-emacs30
(defun mu4e-label-validate (str)
"Validate label STR.
@ -53,7 +53,7 @@ See `mu4e-label-regex' for the definition of the valid format."
(valid-rx (rx bos (regex mu4e-label-regex) eos)))
;; ii. must not start with + or -
(when (or (char-equal first ?+) (char-equal first ?-))
(mu4e-warn "labels cannot starts with '%c'" first))
(mu4e-warn "labels cannot start with '%c'" first))
;; iii. match the regexp
(unless (string-match-p valid-rx str)
(mu4e-warn "not a valid label: %S" str)))
@ -63,7 +63,7 @@ See `mu4e-label-regex' for the definition of the valid format."
"Parse a string a DELTA-EXPRS.
If empty, return nil. Otherwise, raise an error if it is invalid.
Otherwise, return a list with the invidual elements."
Otherwise, return a list with the individual elements."
(seq-map (lambda (delta-expr)
(when (string-empty-p delta-expr)
(mu4e-warn "delta-expression cannot be empty"))
@ -80,18 +80,14 @@ Otherwise, return a list with the invidual elements."
(defun mu4e--labels-completion-at-point ()
"Provide completion when entering a label delta expressions."
(cond
((not (looking-back "[^ \t]*" nil))
(let ((bounds (bounds-of-thing-at-point 'word)))
(list (or (car bounds) (point))
(or (cdr bounds) (point)))))
((looking-back
(rx (any "+" "-")
(group
(opt (regex mu4e-label-regex)))) nil)
(when (looking-back
(rx (any "+" "-")
(group
(opt (regex mu4e-label-regex))))
(line-beginning-position))
(list (match-beginning 1)
(match-end 1)
mu4e-labels-list))))
mu4e-labels-list)))
(defvar mu4e-minibuffer-label-expr-map
(let ((map (copy-keymap minibuffer-local-map)))
@ -103,7 +99,7 @@ Otherwise, return a list with the invidual elements."
"Ask for a label delta +/ expression.
I.e., a sequence of 1 or more space-separated labels, each
prefixed with \"+\" for addding the label, or \"-\" for removing
prefixed with \"+\" for adding the label, or \"-\" for removing
it."
(minibuffer-with-setup-hook
(lambda ()
@ -124,7 +120,8 @@ Update the label cache while doing so."
(let ((deltas (mu4e-label-parse-delta-exprs expr)))
;; update cache
(seq-do (lambda (delta-label)
(cl-pushnew (substring delta-label 1) mu4e-labels-list))
(cl-pushnew (substring delta-label 1) mu4e-labels-list
:test #'equal))
deltas)
;; maybe pass as list?
(mu4e--server-label docid (string-join deltas " "))))