warnings if compilation options use signed char as default #368
Description
Propose change source of analyzer at this point:
for remove these warnings:
char_ref.rl: In function 'consume_named_ref':
char_ref.rl:2498:12: warning: unused variable 'matched' [-Wunused-variable]
In file included from char_ref.rl:28:
char_ref.rl:2501:58: warning: array subscript has type 'char' [-Wchar-subscripts]