GNU bug report logs - #17559
`initials' does not complete underscore delimited input

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Package: emacs; Severity: wishlist; Reported by: Andreas Politz <politza@HIDDEN>; dated Fri, 23 May 2014 14:49:02 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

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From: Andreas Politz <politza@HIDDEN>
To: 17559 <at> debbugs.gnu.org
Subject: Re: bug#17559: 24.3.50;
 Partial completion does not complete underscore delimited input
Date: Wed, 31 Aug 2016 21:27:22 +0200
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Coming back to this...

What do you think, where should the information regarding the string to use as
a separator for the initials style come from, if it's not hard-coded ?

Andreas
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bug#17559; Package emacs. Full text available.

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From: Stefan Monnier <monnier@HIDDEN>
To: Andreas Politz <politza@HIDDEN>
Subject: Re: bug#17559: 24.3.50;
 Partial completion does not complete underscore delimited input
Message-ID: <jwvy4wstw8g.fsf-monnier+emacsbugs@HIDDEN>
References: <87mwe88sbs.fsf@HIDDEN>
 <jwvwqdc5ws2.fsf-monnier+emacsbugs@HIDDEN>
 <87bnuo8ijh.fsf@HIDDEN>
Date: Thu, 19 Jun 2014 17:41:32 -0400
In-Reply-To: <87bnuo8ijh.fsf@HIDDEN> (Andreas Politz's message of
 "Fri, 23 May 2014 20:19:14 +0200")
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> Would something like the following be sufficient ?
[...]
> !           (let ((separator
> !                  (or (completion-metadata-get
> !                       (completion-metadata str table pred)
> !                       'completion-initials-separator)
> !                      (plist-get completion-extra-properties
> !                                 :completion-initials-separator)
> !                      "-")))

It could work, tho it requires changing all the corresponding completion
tables to provide the other "filling" when needed.
I think this should be fixable/fixed without needing to touch the
completion tables.

And if we add such `completion-initials-separator' properties, we'll be
stuck with them "for ever", so I'd rather not go there if there's
a chance we might not need them.


        Stefan
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bug#17559; Package emacs. Full text available.

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From: Andreas Politz <politza@HIDDEN>
To: Stefan Monnier <monnier@HIDDEN>
Subject: Re: bug#17559: 24.3.50;
 Partial completion does not complete underscore delimited input
References: <87mwe88sbs.fsf@HIDDEN>
 <jwvwqdc5ws2.fsf-monnier+emacsbugs@HIDDEN>
Date: Fri, 23 May 2014 20:19:14 +0200
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--=-=-=
Content-Type: text/plain

Stefan Monnier <monnier@HIDDEN> writes:

> severity 17559 wishlist

Would something like the following be sufficient ?


--=-=-=
Content-Type: text/x-diff
Content-Disposition: inline; filename=vc.diff

=== modified file 'lisp/minibuffer.el'
*** lisp/minibuffer.el	2013-10-04 02:12:16 +0000
--- lisp/minibuffer.el	2014-05-23 18:14:44 +0000
***************
*** 3187,3193 ****
                  (string-match completion-pcm--delim-wild-regex str
                                (car bounds)))
        (if (zerop (car bounds))
!           (mapconcat 'string str "-")
          ;; If there's a boundary, it's trickier.  The main use-case
          ;; we consider here is file-name completion.  We'd like
          ;; to expand ~/eee to ~/e/e/e and /eee to /e/e/e.
--- 3187,3200 ----
                  (string-match completion-pcm--delim-wild-regex str
                                (car bounds)))
        (if (zerop (car bounds))
!           (let ((separator
!                  (or (completion-metadata-get
!                       (completion-metadata str table pred)
!                       'completion-initials-separator)
!                      (plist-get completion-extra-properties
!                                 :completion-initials-separator)
!                      "-")))
!             (mapconcat 'string str separator))
          ;; If there's a boundary, it's trickier.  The main use-case
          ;; we consider here is file-name completion.  We'd like
          ;; to expand ~/eee to ~/e/e/e and /eee to /e/e/e.


--=-=-=
Content-Type: text/plain


This appears to work, but I have little clue about the underlying
partial completion matching algorithm.

Andreas

--=-=-=--
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From: Andreas Politz <politza@HIDDEN>
To: Stefan Monnier <monnier@HIDDEN>
Subject: Re: bug#17559: 24.3.50;
 Partial completion does not complete underscore delimited input
References: <87mwe88sbs.fsf@HIDDEN>
 <jwvwqdc5ws2.fsf-monnier+emacsbugs@HIDDEN>
Date: Fri, 23 May 2014 19:57:56 +0200
In-Reply-To: <jwvwqdc5ws2.fsf-monnier+emacsbugs@HIDDEN> (Stefan Monnier's
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Stefan Monnier <monnier@HIDDEN> writes:

> retitle 17559 `initials' does not complete underscore delimited input
> severity 17559 wishlist
> thanks
>

> [...] "a_b_c" can be completed by
> `partial-completion' style to "alonzo_bob_church" [...]
>

Yes, you're right.

Andreas
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#17559; Package emacs. Full text available.
Severity set to 'wishlist' from 'normal' Request was from Stefan Monnier <monnier@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Changed bug title to '`initials' does not complete underscore delimited input' from '24.3.50; Partial completion does not complete underscore delimited input ' Request was from Stefan Monnier <monnier@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

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From: Stefan Monnier <monnier@HIDDEN>
To: Andreas Politz <politza@HIDDEN>
Subject: Re: bug#17559: 24.3.50;
 Partial completion does not complete underscore delimited input
Message-ID: <jwvwqdc5ws2.fsf-monnier+emacsbugs@HIDDEN>
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retitle 17559 `initials' does not complete underscore delimited input
severity 17559 wishlist
thanks

> The documentation for the customizable variable
> `completion-pcm-word-delimiters' states:
> ``"A string of characters treated as word delimiters for completion.''
> The default value contains _ , yet it does not seem to work, i.e.

This variable just means that "a_b_c" can be completed by
`partial-completion' style to "alonzo_bob_church" and indeed, that
works, AFAICT.

> (let ((completion-styles '(partial)))
>   (completion-initials-all-completions "fdh" '("friss_die_haelfte") nil 0))

[ completion-styles is used to decide which completion-*-all-completions
  to call, but completion-initials-all-completions should be unaffected by
  completion-styles (and indeed, it isn't, and `partial' is not a valid
  completion style, AFAIK). ]

> => nil

Indeed, completion-initials-all-completions hard-codes "-" as the
separator (you can see it in completion-initials-expand).


        Stefan
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#17559; Package emacs. Full text available.

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From: Andreas Politz <politza@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 24.3.50;
 Partial completion does not complete underscore delimited input 
Date: Fri, 23 May 2014 16:47:51 +0200
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The documentation for the customizable variable
`completion-pcm-word-delimiters' states:
``"A string of characters treated as word delimiters for completion.''

The default value contains _ , yet it does not seem to work, i.e.

(let ((completion-styles '(partial)))
  (completion-initials-all-completions "fdh" '("friss_die_haelfte") nil 0))
=3D> nil
(let ((completion-styles '(partial)))
  (completion-initials-all-completions "fdh" '("friss-die-haelfte") nil 0))
=3D> ("friss-die-haelfte" . 0)

It would be nice for c-mode, if this could be made working.

Gr=C3=BC=C3=9Fe,

A. Politz
Acknowledgement sent to Andreas Politz <politza@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#17559; Package emacs. Full text available.
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