Karthik Nayak <karthik....@gmail.com> writes:

> diff --git a/ref-filter.c b/ref-filter.c
> index 7d2732a..b098b16 100644
> --- a/ref-filter.c
> +++ b/ref-filter.c
> @@ -56,6 +56,7 @@ static struct {
>       { "color" },
>       { "align" },
>       { "end" },
> +     { "contents:lines" },

Do we even need "contents:lines" and existing other "contents:blah"
in this list in the first place?  If they are needed, group them
together, not append at the end.

I wonder how this code sensibly can parse "%(contents:lines=6)".
After splitting the format string at %( and closing ), the code
calls parse_ref_filter_atom() and the rule that helper function uses
to figure out the atom-name proper (which is to be checked against
the valid_atom[] array) is to find the first colon, so

    %(contents:lines=6)

would cause "contents:lines=6" to be fed parse_ref_filter_atom(),
it cheks if "contents" is in the valid_atom[] array (it is), and
stores the whole thing in used_atom[].

So in that sense, match_atom_name() would do the right thing, but
that would make any reader of this code realize that she never saw
"contents:lines" entry in valid_atom[] array being used during this
process.
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