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("-L argument not 'start,end:file' or ':funcname:file': %s",
item->string);
range_part = xstrndup(item->string, name_part - item->string);
name_part++;