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sub: recognize UTF-8 characters in SDH subtitle filter 

Only printable ASCII characters were considered to be valid texts. Make
it possible that UTF-8 contents are also considered valid.

This does not make the SDH subtitle filter support non-English
languages. This just prevents the filter from blindly marking lines that
have only UTF-8 characters as empty.

Fixes #6502
This commit is contained in:
zc62 2019-02-20 17:53:02 -05:00 committed by sfan5
parent 8f5a42b1a0
commit b9cde8d95c
1 changed files with 4 additions and 1 deletions
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5
sub/filter_sdh.c
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@ -406,8 +406,11 @@ char *filter_SDH(struct sd *sd, char *format, int n_ignored, char *data, int len
line_with_text = true;
}
} else if (*rp && rp[0] != '\\') {
if (rp[0] > 32 && rp[0] < 127 && rp[0] != '-')
if ((rp[0] > 32 && rp[0] < 127 && rp[0] != '-') ||
(unsigned char)rp[0] >= 0xC0)
{
line_with_text = true;
}
append(sd, buf, rp[0]);
rp++;
} else if (rp[0] == '\\' && rp[1] != 'N') {