GNU bug report logs - #34089
27.0.50; Substring icomplete broken for M-x switch-to-buffer

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: João Távora <joaotavora <at> gmail.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#34089: closed (27.0.50; Substring icomplete broken for M-x
 switch-to-buffer)
Date: Wed, 16 Jan 2019 06:49:03 +0000

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Your message dated Wed, 16 Jan 2019 06:48:25 +0000
with message-id <CALDnm53gp4pi8-Rg1EFRw3VcLqmoGHcNi4C3OyMPhR0Q7uH8AA <at> mail.gmail.com>
and subject line Re: bug#34089: 27.0.50; Substring icomplete broken for M-x switch-to-buffer
has caused the debbugs.gnu.org bug report #34089,
regarding 27.0.50; Substring icomplete broken for M-x switch-to-buffer
to be marked as done.

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From: João Távora <joaotavora <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Cc: monnier <at> iro.umontreal.ca
Subject: 27.0.50; Substring icomplete broken for M-x switch-to-buffer
Date: Wed, 16 Jan 2019 00:11:38 +0000

Hi maintainers,

In my newfound icomplete adventures, I've come across a very annoying
bug I just cannot catch:

    Emacs -Q
    M-x icomplete-mode
    M-: (setq completion-styles '(substring)) RET
    M-: (generate-new-buffer "Messages") RET
    C-x b

Now type "M".  The minibuffer suggest the buffer "Messages", but what
about "*Messages"?  Why isn't it considered?

If, instead of "M", I type "essa", then "Messages" and "*Messages*"
_are_ both considered, correctly.

Tracing completion-substring-try/all-completion shows that it is not
being called in the first situation: why???

João

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From: João Távora <joaotavora <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 34089 <at> debbugs.gnu.org, 34089-done <at> debbugs.gnu.org
Subject: Re: bug#34089: 27.0.50;
 Substring icomplete broken for M-x switch-to-buffer
Date: Wed, 16 Jan 2019 06:48:25 +0000

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On Wed, Jan 16, 2019, 02:04 Stefan Monnier <monnier <at> iro.umontreal.ca wrote:

> Not sure how to write the code that combines category-default-styles and
> global styles in order to get that behavior.


Delete everything and try again?

I kid, I kid... :-) Thanks Stefan, I was hoping for such an easy answer!

BTW how do you debug this stuff?  Edebug is akward because of the
minibuffer usage (and the second frame technique doesn't always work).

João

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