Armaan Sandhu
7cc0257ba8
strv_rebreak_lines() was the last place left that decoded with the permissive utf8_encoded_to_unichar() and then asked unichar_console_width() how wide the result is, so it accepted and measured overlong encodings, surrogates, noncharacters and the obsolete five and six byte forms that utf8_console_width() now refuses. That matters because callers mix the two within a single width computation. sd-varlink-idl.c sizes its indent with utf8_console_width() and then breaks the body with strv_rebreak_lines(); verbs.c does the same. One half of the sum refused a sequence that the other half happily assigned a width to. Use utf8_char_console_width(), which does the validation and the width in one step, and advance with utf8_next_char() rather than the decoded length. The function already refused invalid UTF-8, so the only change is which sequences count as invalid; it now matches utf8_is_valid(), as everywhere else.
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