[elpa] externals/denote 5d245dfca6 1/2: Fix regexp to read non-ascii characters

[ELPA Syncer]

branch: externals/denote
commit 5d245dfca6b78cd89f2fc9a86d9743b3d4f4cd46
Author: Protesilaos Stavrou <info@protesilaos.com>
Commit: Protesilaos Stavrou <info@protesilaos.com>

    Fix regexp to read non-ascii characters
    
    There were two simultaneous threads about this issue:
    
    1. On the mailing list with Frank Ehmsen and Peter Prevos:
       
<https://lists.sr.ht/~protesilaos/denote/%3C2273b3b1-344c-6c6e-3ab6-a227b6bc3721%40eh-is.de%3E>.
    
    2. On the GitHub mirror with user hpgisler:
       <https://github.com/protesilaos/denote/issues/61>.
    
    This also relates to issue 57 on the GitHub mirror, with the
    participation of pRotOta1p:
    <https://github.com/protesilaos/denote/issues/57>.
    
    Thanks to everyone involved!
---
 denote-faces.el | 5 +++--
 denote.el       | 7 ++++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/denote-faces.el b/denote-faces.el
index 48e3f75f9e..b58cc67610 100644
--- a/denote-faces.el
+++ b/denote-faces.el
@@ -82,10 +82,11 @@ and seconds."
   "Face for file name delimiters in Dired buffers."
   :group 'denote-faces)
 
+;; For character classes, evaluate: (info "(elisp) Char Classes")
 (defvar denote-faces--file-name-regexp
   (concat "\\(?1:[0-9]\\{8\\}\\)\\(?2:T[0-9]\\{6\\}\\)"
-          "\\(?:\\(?3:--\\)\\(?4:[0-9A-Za-z-]*\\)\\)?"
-          "\\(?:\\(?5:__\\)\\(?6:[0-9A-Za-z_-]*\\)\\)?"
+          "\\(?:\\(?3:--\\)\\(?4:[[:alnum:]-]*\\)\\)?"
+          "\\(?:\\(?5:__\\)\\(?6:[[:alnum:]_-]*\\)\\)?"
           "\\(?7:\\..*\\)?$")
   "Regexp of file names for fontification.")
 
diff --git a/denote.el b/denote.el
index 45a31c88e1..2152c695a5 100644
--- a/denote.el
+++ b/denote.el
@@ -308,16 +308,17 @@ are described in the doc string of `format-time-string'."
 
 ;;;; Main variables
 
+;; For character classes, evaluate: (info "(elisp) Char Classes")
 (defconst denote--id-format "%Y%m%dT%H%M%S"
   "Format of ID prefix of a note's filename.")
 
 (defconst denote--id-regexp "\\([0-9]\\{8\\}\\)\\(T[0-9]\\{6\\}\\)"
   "Regular expression to match `denote--id-format'.")
 
-(defconst denote--title-regexp "--\\([0-9A-Za-z-]*\\)"
-  "Regular expression to match keywords.")
+(defconst denote--title-regexp "--\\([[:alnum:]-]*\\)"
+  "Regular expression to match the title field.")
 
-(defconst denote--keywords-regexp "__\\([0-9A-Za-z_-]*\\)"
+(defconst denote--keywords-regexp "__\\([[:alnum:]_-]*\\)"
   "Regular expression to match keywords.")
 
 (defconst denote--extension-regexp "\\.\\(org\\|md\\|txt\\)"