Re: [PATCH v3] line-range: Fix infinite loop bug with degenerate '$' regex

> Lars Kellogg-Stedman <lars@oddbit.com> writes:
>
>> When the -L argument to "git log" is passed the degenerate regular
>> expression "$" (as in "-L :$:line-range.c"), this results in an
>> infinite loop in find_funcname_matching_regexp().
>
> Is "matching an empty line" the only way a regular expression can be
> a "degenerate" one?  If not, perhaps being a bit more explicit would
> help the readers, e.g.
>
>     ... a regular expression that matches any line, even an empty
>     one, such as "-L :$:line-range.c", this results in ...