Subject: Re: bug#18859: 24.3; ibuffer-mark-by-file-name-regexp does not match displayed name

From: "Basil L. Contovounesios" <[email-masked]>
Date: Sun, 17 Jan 2021 16:32:57 +0000

"Basil L. Contovounesios" <[email-masked]> writes:

> Lars Ingebrigtsen <[email-masked]> writes:
>
>> Reuben Thomas <[email-masked]> writes:
>>
>>> In the *IBuffer*, files in my home directory are displayed with names
>>> starting with ‘~’, but when I type % f ~ RET I get no matches. If I type
>>> instead % f /home/MYUSER RET then all files in my home directory are
>>> matched.
>>>
>>> I’m not convinced that the matches should be made in the second case,
>>> even; but certainly they _should_ be made in the first.
>>
>> The following patch fixes this by matching on the abbreviated file name
>> (which is what ibuffer uses to create the displayed file name).
>>
>> But I guess this could be a controversial change -- does anybody have an
>> objection to making this change?  
>>
>> diff --git a/lisp/ibuf-ext.el b/lisp/ibuf-ext.el
>> index 1b69574a39..06a2248d40 100644
>> --- a/lisp/ibuf-ext.el
>> +++ b/lisp/ibuf-ext.el
>> @@ -1846,7 +1846,8 @@ ibuffer-mark-by-file-name-regexp
>>  			  (stringp dired-directory)
>>  			  dired-directory)))))
>>  	 (when name
>> -	   (string-match regexp name))))))
>> +           ;; Match on the displayed file name (which is abbreviated).
>> +	   (string-match regexp (abbreviate-file-name name)))))))
>
> Any objections to this followup fix for master?

Or rather, the improved patch attached.

-- 
Basil

>From 4cf9d4f2be9095b3fa77ef4a54929f0a47c986dc Mon Sep 17 00:00:00 2001
From: "Basil L. Contovounesios" <[email-masked]>
Date: Sun, 17 Jan 2021 15:53:53 +0000
Subject: [PATCH] Fix ibuffer-mark-by-file-name-regexp abbreviations

* lisp/ibuffer.el (ibuffer--abbreviate-file-name): New function.
(filename): Use it.
* lisp/ibuf-ext.el (ibuffer-mark-by-file-name-regexp): Prefer
read-regexp over read-string for reading regexps.  Determine file
name using ibuffer-buffer-file-name for consistency.  Abbreviate
file name using ibuffer-directory-abbrev-alist (bug#18859).
---
 lisp/ibuf-ext.el | 17 ++++++-----------
 lisp/ibuffer.el  |  9 ++++++---
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/lisp/ibuf-ext.el b/lisp/ibuf-ext.el
index 7be1b3d16c..a6523e10e4 100644
--- a/lisp/ibuf-ext.el
+++ b/lisp/ibuf-ext.el
@@ -1823,18 +1823,13 @@ ibuffer-mark-by-mode-regexp
 ;;;###autoload
 (defun ibuffer-mark-by-file-name-regexp (regexp)
   "Mark all buffers whose file name matches REGEXP."
-  (interactive "sMark by file name (regexp): ")
+  (interactive (list (read-regexp "Mark by file name (regexp)")))
   (ibuffer-mark-on-buffer
-   #'(lambda (buf)
-       (let ((name (or (buffer-file-name buf)
-		       (with-current-buffer buf
-			 (and
-			  (boundp 'dired-directory)
-			  (stringp dired-directory)
-			  dired-directory)))))
-	 (when name
-           ;; Match on the displayed file name (which is abbreviated).
-	   (string-match regexp (abbreviate-file-name name)))))))
+   (lambda (buf)
+     (let ((name (with-current-buffer buf (ibuffer-buffer-file-name))))
+       (when name
+         ;; Match on the displayed file name (which is abbreviated).
+         (string-match-p regexp (ibuffer--abbreviate-file-name name)))))))
 
 ;;;###autoload
 (defun ibuffer-mark-by-content-regexp (regexp &optional all-buffers)
diff --git a/lisp/ibuffer.el b/lisp/ibuffer.el
index 4800e0243d..84c53b16ac 100644
--- a/lisp/ibuffer.el
+++ b/lisp/ibuffer.el
@@ -1308,6 +1308,11 @@ ibuffer-buffer-file-name
                           (car dired-directory)))))
 	(and dirname (expand-file-name dirname))))))
 
+(defun ibuffer--abbreviate-file-name (filename)
+  "Abbreviate FILENAME using `ibuffer-directory-abbrev-alist'."
+  (let ((directory-abbrev-alist ibuffer-directory-abbrev-alist))
+    (abbreviate-file-name filename)))
+
 (define-ibuffer-op ibuffer-do-save ()
   "Save marked buffers as with `save-buffer'."
   (:complex t
@@ -1885,9 +1890,7 @@ filename
        (cond ((zerop total) "No files")
 	     ((= 1 total) "1 file")
 	     (t (format "%d files" total))))))
-  (let ((directory-abbrev-alist ibuffer-directory-abbrev-alist))
-    (abbreviate-file-name
-     (or (ibuffer-buffer-file-name) ""))))
+  (ibuffer--abbreviate-file-name (or (ibuffer-buffer-file-name) "")))
 
 (define-ibuffer-column filename-and-process
   (:name "Filename/Process"
-- 
2.29.2