Re: [PATCH] log -L: improve error message on malformed argument

> The old message did not mention the :regex:file form.
>
> To avoid overly long lines, split the message into two lines (in case
> item->string is long, it will be the only part truncated in a narrow
> terminal).
>
> Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
> ---
>  line-log.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/line-log.c b/line-log.c
> index a490efe..e725248 100644
> --- a/line-log.c
> +++ b/line-log.c
> @@ -575,7 +575,8 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
>  
>  		name_part = skip_range_arg(item->string);
>  		if (!name_part || *name_part != ':' || !name_part[1])
> -			die("-L argument '%s' not of the form start,end:file",
> +			die("invalid -L argument '%s'.\n"
> +			    "It should be of the form start,end:file or :regex:file.",
>  			    item->string);
>  		range_part = xstrndup(item->string, name_part - item->string);
>  		name_part++;