* minibuffer.el (completion-pcm-complete-word-inserts-delimiters):

New custom variable.
(completion-pcm--string->pattern): Use it.
(completion-pcm--pattern->regex, completion-pcm--pattern->string):
Make it handle any symbol as `any'.
(completion-pcm--merge-completions): Extract common suffix for the new
`prefix' symbol as well.
(completion-substring--all-completions): Use the new `prefix' symbol.

1 files changed, 3 insertions, 2 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 578aac46e05..0b522c5fd62 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -123,8 +123,9 @@ regardless of the value of `delete-by-moving-to-trash'.
 The reason is that this interferes with cua-mode.
 
 ** partial-completion-mode is now obsolete.
-You can get the same behavior with
-(setq completion-styles '(partial-completion initials)).
+You can get a comparable behavior with:
+(setq completion-styles '(partial-completion initials))
+(setq completion-pcm-complete-word-inserts-delimiters t)
 
 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
 ** Customize