Help strings are compile-time generated and aligned to 80-character lines based on ASCII char count (byte counts).
If non-ASCII UTF-8 characters are included in the help string descriptions, the alignment won't be exactly right -- it'll never exceed 80 characters, but UTF-8 continuation bytes will be counted as independent characters and the lines will be limited to less than 80 characters.
This matters particularly for help strings in languages other than English.
Also check: how does (or doesn't) GNU getopt handle UTF8 longopts?
Help strings are compile-time generated and aligned to 80-character lines based on ASCII char count (byte counts).
If non-ASCII UTF-8 characters are included in the help string descriptions, the alignment won't be exactly right -- it'll never exceed 80 characters, but UTF-8 continuation bytes will be counted as independent characters and the lines will be limited to less than 80 characters.
This matters particularly for help strings in languages other than English.
Also check: how does (or doesn't) GNU getopt handle UTF8 longopts?