Re: [PATCH] xdiff-interface.c: strip newline (and cr) from line before pattern matching

> POSIX doth sayeth:
> 
>    "In the regular expression processing described in IEEE Std 1003.1-2001,
>     the <newline> is regarded as an ordinary character and both a period and
>     a non-matching list can match one. ... Those utilities (like grep) that
>     do not allow <newline>s to match are responsible for eliminating any
>     <newline> from strings before matching against the RE."
> 
> Thus far git has not been removing the trailing newline from strings matched
> against regular expression patterns. This has the effect that (quoting
> Jonathan del Strother) "... a line containing just 'FUNCNAME' (terminated by
> a newline) will be matched by the pattern '^(FUNCNAME.$)' but not
> '^(FUNCNAME$)'", and more simply not '^FUNCNAME$'.