From: Stephen Leake <stephen_leake@stephe-leake.org>
To: emacs-devel@gnu.org
Subject: Allow xref to use other than current major-mode
Date: Tue, 25 Aug 2015 05:00:50 -0500 [thread overview]
Message-ID: <86fv37it65.fsf@stephe-leake.org> (raw)
I have the following use case:
I'm in a C buffer, asking "what elisp function will
semantic-parse-region dispatch to in this buffer?".
semantic-parse-region is a mode-local overloadable function; it
dispatches based on the current major mode. elisp--xref-find-definitions
doesn't currently show mode-local overrides; I'm working on adding that
capability.
I'd like to use xref-find-definitions to answer this question, so I
invoke it with C-u M-.
That prompts me for an identifier. However, it uses the c-mode value of
xref-identifier-completion-table-function, so I can't complete to
semantic-parse-region.
In addition, xref--show-xrefs uses the c-mode value of
xref-find-function, so it won't find the elisp function.
To handle this, I propose changing both
xref-identifier-completion-table-function and xref-find-function to be
mode-local, instead of buffer-local.
Then, when current-prefix-arg is non-nil, xref--read-identifier can
prompt for the mode to use when completing the identifier, and
xref--show-xrefs can use that mode when calling xref-find-function.
There are similar use cases; from a LaTeX document buffer, looking at the
description of an Ada function, find the Ada code that defines that
function. Or from a text mode notes file, look for a definition in any
one of several languages.
--
-- Stephe
next reply other threads:[~2015-08-25 10:00 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-25 10:00 Stephen Leake [this message]
2015-08-25 11:48 ` Allow xref to use other than current major-mode Dmitry Gutov
2015-08-25 12:19 ` João Távora
2015-08-25 12:25 ` David Engster
2015-08-25 14:47 ` Stephen Leake
2015-08-25 15:07 ` David Engster
2015-08-25 15:23 ` Eli Zaretskii
2015-08-25 17:25 ` Dmitry Gutov
2015-08-25 21:17 ` Stephen Leake
2015-08-25 15:31 ` Stephen Leake
2015-08-25 15:41 ` Stephen Leake
2015-08-25 17:05 ` Dmitry Gutov
2015-08-25 21:13 ` Stephen Leake
2015-08-25 22:11 ` Dmitry Gutov
2015-08-25 22:15 ` Stefan Monnier
2015-08-25 22:29 ` Dmitry Gutov
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