[PATCH v2 3/7] completion: mark bash script as LF-only

Without this change, the completion script does not work, as Bash expects its scripts to have line feeds as end-of-line markers (this is particularly prominent in quoted multi-line strings, where carriage returns would slip into the strings as verbatim characters otherwise).

This change is required to let t9902-completion pass when Git's source code is checked out with `core.autocrlf = true`.

Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
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 contrib/completion/.gitattributes | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 contrib/completion/.gitattributes