GNU bug report logs - #78719
30.1; [PATCH] Add functions `string-common-prefix' and `string-try-completion'

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Phil Sainty <psainty <at> orcon.net.nz>
Cc: mail <at> daniel-mendler.de, juri <at> linkov.net, monnier <at> iro.umontreal.ca, drew.adams <at> oracle.com, 78719 <at> debbugs.gnu.org
Subject: bug#78719: 30.1; [PATCH] Add functions `string-common-prefix' and `string-try-completion'
Date: Fri, 18 Jul 2025 09:29:16 +0300

> Date: Fri, 18 Jul 2025 16:01:08 +1200
> From: Phil Sainty <psainty <at> orcon.net.nz>
> Cc: Eli Zaretskii <eliz <at> gnu.org>, monnier <at> iro.umontreal.ca,
>  78719 <at> debbugs.gnu.org, drew.adams <at> oracle.com, juri <at> linkov.net
> 
> On 2025-07-06 03:29, Daniel Mendler wrote:
> > Then we can maybe convince Eli that the following calling convention is
> > better, since the filtering arguments STRING and REGEXP-LIST are
> > deprioritized? The STRING and REGEXP-LIST arguments are
> > completion-related, while IGNORE-CASE is needed for basic
> > case-insensitive prefix computation.
> > 
> > (string-common-prefix LIST &optional IGNORE-CASE STRING REGEXP-LIST)
> > 
> > Alternatively we could go with the simplest form and suggest to use
> > `try-completion' if additional filtering is needed.
> > 
> > (string-common-prefix LIST &optional IGNORE-CASE)
> 
> I'm happy to proceed with either option.

My vote is for the much simpler latter API, even after reading your
benchmarks.  I thought having such a simple API was the goal from the
get-go.

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