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enhancements to compile.el (Emacs 20 code)

From: Drew Adams
Subject: enhancements to compile.el (Emacs 20 code)
Date: Tue, 30 Mar 2004 10:50:05 -0800


Stefan Monnier suggested I post this here.

I wrote some code long ago that works with Emacs 20.7 and earlier - I don't
know if it works with Emacs 21 - probably not, out of the box. In any case,
some of the changes I made might be of interest for adaptation/inclusion in
compile.el. They are essentially cosmetic (for usability), so I expect they
are complementary to changes made recently (Emacs 21) to compile.el.

I don't have the resources to work on Emacs 21 development, myself, but I'm
hoping my code might be useful for that development, if only by suggesting
something useful that might be recoded in a more up-to-date fashion.

I changed and added to the functions in compile.el not by changing the file
itself, but by adding an envelope of two new files (attached): compile-.el
and compile+.el, to be loaded before and after compile.el, respectively.
File highlight.el is also attached, to provide function

Please try these files with Emacs 20 to see what they do. Let me know if you
have any questions.

Here is a description of the compile.el features I changed:

 - The last grep pattern used (whether quoted or not) is used for
highlighting - see grep and grep-regexp-face.

 - grep - Saves grep-pattern for highlighting. Interactive spec uses
grep-default-regexp-fn (see next) to provide default.

 - New user options (vars):

    . grep-default-regexp-fn - Used in interactive spec of grep command to
provide default.

    . grep-regexp-face - For highlighting grep regexp: everywhere in *grep*
buffer and at specific occurrence in target buffer when you use

    . compile-buffer-mouse-face - Used instead of highlight as mouse-face in
compile-reinitialize-errors and compilation-forget-errors.

    . compile-reinitialize-errors - Put mouse-face on the whole line.

    . compilation-mode-font-lock-keywords - Highlights grep-pattern in
*grep* buffer.

    . compilation-goto-locus - Highlights grep-pattern at error (in target
buffer) and displays line #.

    . compilation-next-error - Displays line #.

    . compilation-mode - Uses fundamental-mode instead of

 - Keys that would modify a compilation-mode buffer (e.g. self-insert) are
unbound and available to user for binding.

 - (put 'compile-mode 'mode-class 'special)

 - compilation-minor-mode-map is a full key map - the unused keys display a
help message for Compile Mode.

 - compilation-forget-errors and compile-reinitialize-errors - Use

 - Minibuffer messages use color to make some terms stand out (via function
display-in-minibuffer, defined in file strings.el).

 - compile - Resets grep-pattern from last grep.

 - compile-internal - Sets font-lock-fontified to nil. Prevents frame from
getting shrink-wrapped prematurely.

 - compilation-finish-functions - Added shrink-wrap-1-window-frames-on and
fontify-buffer. The first of these shrink-wraps the compilation buffer frame
to fit the output, when compilation is finished.

The changes I've made also reference functions defined in some other files
I've written. They define functions that are not essential to the compile
functionality. I can send them separately, on request.


   Drew Adams

Attachment: compile-.el
Description: Binary data

Attachment: compile+.el
Description: Binary data

Attachment: highlight.el
Description: Binary data

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