Before, the commit-msg hook would not catch too long lines when
squashing commits, as the provided message starts immediately with a
commented line.
Instead of simply using all lines until the first comment, use all lines
until git's cut-line and remove all commented lines in between.
Do not hard-code git's commentary character but rather use
`core.commentChar`. `auto` is depending of the context interpreted as
'any character' or `#`.
Julian Prein
f620e6d577
