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dir-locals.el: Adds White Space support

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Trailing white spaces will be now always highlighted, not just in
prog-mode.

Also, the White Space package, which is available since GNU Emacs 22,
is loaded and activated locally in prog-mode.

Additionally, using White Space variables, we set highlighting through
faces on wrong indentation and the maximum length of a coding line.

Notice that:
 - The highlighting for the characters beyond the set length of a
   coding line is not activated by default, only for wrong
   indentations.
 - If the White Space package is not available, errors on loading or
   activation are ignored.
 - If the White Space mode is not activated the set variables would
   not have any effect.

v2: Removed too long lines trail highlighting, as suggested by Ilia
    Mirkin.

Signed-off-by: Andres Gomez <agomez@igalia.com>
Acked-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Andres Gomez 2016-11-09 18:32:41 +02:00
parent 9730f2734b
commit 5923088d75
1 changed files with 7 additions and 2 deletions
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9
.dir-locals.el
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@ -1,4 +1,5 @@
((prog-mode
((nil . ((show-trailing-whitespace . t)))
(prog-mode
(indent-tabs-mode . nil)
(tab-width . 8)
(c-basic-offset . 3)
@ -8,6 +9,10 @@
(c-set-offset 'case-label '0)
(c-set-offset 'innamespace '0)
(c-set-offset 'inline-open '0)))
)
(whitespace-style face indentation)
(whitespace-line-column . 79)
(eval ignore-errors
(require 'whitespace)
(whitespace-mode 1)))
(makefile-mode (indent-tabs-mode . t))
)