Re: [PATCH v2 4/6] grep.c: display column number of first match

> On Sun, Apr 22, 2018 at 4:47 PM, Taylor Blau <me@ttaylorr.com> wrote:
> > Building upon our work in the previous commit to add members 'columnnum'
> > and 'color_columno' to 'grep_opt', we teach show_line() how to respect
> > those options.
> >
> > When requested, show_line() will display the column number of the first
> > match on a non-context line. show_line() differentiates between context
> > and non-context lines through the '&& cno' check. 'cno' will be equal to
> > zero if and only if show_line() is invoked on a context line. It will be
> > a non-zero value otherwise.
>
> This interpretation of 'cno' seems important enough to deserve an
> in-code comment. (And, you may be able to drop some of the same
> information from the commit message if it merely duplicates the
> in-code comment.)