There is no problem in practice because the possible URL prefixes are hardcoded
in the spell plugin and don't contain any UTF-8 char on more than one byte.
When the input is empty, length of string is zero: when sending zero to
function weechat_string_dyn_alloc, the function returns NULL and therefore we
return immediately instead of handling the empty input, which is a valid value.
The regression was introduced by the use of dynamic strings, commit:
299f74bfef
The following things have been renamed:
- file aspell.conf -> spell.conf
- options aspell.* -> spell.*
- bar item aspell_dict -> spell_dict
- bar item and local variable aspell_suggest -> spell_suggest
- info aspell_dict -> spell_dict
Sébastien Helleu