On Thu, Jan 28, 2016 at 4:45 AM, Justin M. Keyes <[email protected]>
wrote:
> glob2regpat("") returns "^$", but that not the regex equivalent of an
> empty wildcard pattern. It should probably return empty string instead.
> Here's a patch:
>
> diff --git a/src/eval.c b/src/eval.c
> index 5f05c3d..b68d086 100644
> --- a/src/eval.c
> +++ b/src/eval.c
> @@ -12993,7 +12993,7 @@ f_glob2regpat(argvars, rettv)
> char_u> *pat = get_tv_string_chk(&argvars[0]);
> -
> rettv->v_type = VAR_STRING;
> - rettv->vval.v_string = (pat == NULL)
> + rettv->vval.v_string = (pat == NULL || *pat == NUL)
> > > > ? NULL : file_pat_to_reg_pat(pat, NULL, NULL, FALSE);
> }
>
>
> An empty regpat matches everywhere.
When matching a string (as in "if string_var =~# pattern_var | DoSomething
| else | DoSomethingElse | endif"), in order to match an empty string you
need to test that there is nothing between beginning and end of the string,
so the matching pattern is indeed '^$'
T'ain't a bug, it's a feature.
Best regards,
Tony.
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