[Mesa-dev] [PATCH] dir-locals.el: Adds White Space support

[Ilia Mirkin]

Acked-by: Ilia Mirkin <imirkin at alum.mit.edu>

On Wed, Nov 9, 2016 at 11:32 AM, Andres Gomez <agomez at igalia.com> wrote:
> 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 at igalia.com>
> ---
>  .dir-locals.el | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/.dir-locals.el b/.dir-locals.el
> index 4b53931..5340c3a 100644
> --- a/.dir-locals.el
> +++ b/.dir-locals.el
> @@ -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))
>   )
> --
> 2.9.3
>