[ jEdit-devel ] [ jedit-Feature Requests-3526562 ] recognize buffer properties in emacs format

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Feature Requests item #3526562, was opened at 2012-05-14 06:28
Message generated for change (Comment added) made by jarekczek
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Category: None
Group: None
Status: Open
>Resolution: None
>Priority: 3
Private: No
Submitted By: Victor Engmark (engmark)
Assigned to: Nobody/Anonymous (nobody)
>Summary: recognize buffer properties in emacs format

Initial Comment:
It would be nice if jEdit could support Emacs mode strings for mode settings. A simple addition would be to include mode strings in the default first line globs. For example, to detect non-executable Perl files which have no extension but whose first line starts with a shebang or "# -*- mode: perl; -*-":

{#!/*perl*,*mode: *perl*}

A more difficult feature would be the support for overrides of the jEdit mode settings with strings like this:

; -*- mode: Lisp; tab-width: 4; -*-

This could make it easier to share files, especially since there is (AFAIK) no way to specify mode settings per directory tree.

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>Comment By: Jarek Czekalski (jarekczek)
Date: 2012-05-14 09:25

Message:
So most part of Victor's request is already done. General recognition of
emacs syntax file properties would be desirable though. Let's have this
entry for that. Here are the relevant pages from emacs manual:

http://www.gnu.org/software/emacs/manual/html_node/emacs/Specifying-File-Variables.html#Specifying-File-Variables
http://www.gnu.org/software/emacs/manual/html_node/emacs/Choosing-Modes.html

Workaround is having jedit line as a second, because jedit properites
needn't be set in the very first line.

As the feature is not expected to be applied soon, you could edit your
catalog file and enable perl mode recognition changin the FIRST_LINE_GLOB.
I think if you have a good working version of catalog file, you could also
submit a patch for that file. To patches tracker. That would be a better
workaround for the general issue.

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Comment By: Alan Ezust (ezust)
Date: 2012-05-14 08:50

Message:
in jedit we use = instead of colon (which is used by emacs).

http://www.jedit.org/users-guide/buffer-local.html

inserting a line like this:
# :mode=perl: 

works for me.


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Comment By: Victor Engmark (engmark)
Date: 2012-05-14 08:44

Message:
As already mentioned I work with files which have no shebang line (because
they are not supposed to be executed on their own), and don't have a
*.p[lm]{,.tdy} extension (for unknown reasons), but *do* have a mode line.
These are not detected as Perl.

Attaching an example file.

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Comment By: Jarek Czekalski (jarekczek)
Date: 2012-05-14 08:36

Message:
"Would be nice", so it is not a bug, but a feature request. I'm moving it
to the correct tracker.

I am not sure, but seems like part of the things is already supported. See
"Writing edit modes / Installing edit modes" and "Using jedit / Customizing
/ Buffer-Local properties" chapters of the users guide.

Let's have this report for a single thing. Please provide a short file that
is not recognized by jedit as a perl file. We already track some regular
expressions:
FIRST_LINE_GLOB="#!/*perl*" />

I am testing with daily built jedit.

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