master 6afa91f7966: Don't over-normalize file names starting with "~" in Eshell

[Jim Porter]

branch: master
commit 6afa91f796661058a8eb3646d7063ea468b42901
Author: Jim Porter <jporterbugs@gmail.com>
Commit: Jim Porter <jporterbugs@gmail.com>

    Don't over-normalize file names starting with "~" in Eshell
    
    Previously, this would call 'expand-file-name' on the file name, but
    that normalizes the value, turning something like "~/." into
    "/home/user".  As a result, Pcomplete didn't work for dotfiles after
    "~/" (bug#28064).
    
    * lisp/eshell/em-dirs.el (eshell-expand-user-reference): New
    function...
    (eshell-expand-user-reference): ... use it.
---
 lisp/eshell/em-dirs.el | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/lisp/eshell/em-dirs.el b/lisp/eshell/em-dirs.el
index eb679b80cb5..4bc6342d422 100644
--- a/lisp/eshell/em-dirs.el
+++ b/lisp/eshell/em-dirs.el
@@ -253,11 +253,17 @@ Thus, this does not include the current directory.")
     (throw 'eshell-replace-command
           (eshell-parse-command "cd" (flatten-tree args)))))
 
+(defun eshell-expand-user-reference (file)
+  "Expand a user reference in FILE to its real directory name."
+  (replace-regexp-in-string
+   (rx bos (group "~" (*? anychar)) (or "/" eos))
+   #'expand-file-name file))
+
 (defun eshell-parse-user-reference ()
   "An argument beginning with ~ is a filename to be expanded."
   (when (and (not eshell-current-argument)
-            (eq (char-after) ?~))
-    (add-to-list 'eshell-current-modifiers 'expand-file-name)
+             (eq (char-after) ?~))
+    (add-to-list 'eshell-current-modifiers #'eshell-expand-user-reference)
     (forward-char)
     (char-to-string (char-before))))