Package: irssi Version: 0.8.15-5 Severity: normal Hi,
If an incoming message has a combining or zero-width character as the first code-point (or sequence of code-points) then irssi does nothing about this; causing it to be processed by the terminal as if the combining character applied to the last character of the previous part of the irssi format string (or in the case of a zero-width character that causes printing for it to overprint on that character). In the default case this last character is a space; causing the result to look as if that space is missing. It is possible that with other format strings this could be used to trick the reader into believing false things. What irssi should do is detect this case and either: a) strip the offending combining or zero-width characters b) insert an additional space at the beginning of the message such that the combining or zero-width characters are presented as in the first column of the usual message area. I think the latter is preferable. I have attached two images of bad output lines; and below is uniname(1) output of what is being displayed. The images are also currently available on my webserver at: http://www.ysolde.ucam.org/~jdamery/bugs.debian.org/irssi-rtl.png http://www.ysolde.ucam.org/~jdamery/bugs.debian.org/irssi-acute.png Thanks, J. character byte UTF-32 encoded as glyph name 0 0 00005B 5B [ LEFT SQUARE BRACKET 1 1 000053 53 S LATIN CAPITAL LETTER S 2 2 000047 47 G LATIN CAPITAL LETTER G 3 3 00004F 4F O LATIN CAPITAL LETTER O 4 4 00005D 5D ] RIGHT SQUARE BRACKET 5 5 000020 20 SPACE 6 6 00003C 3C < LESS-THAN SIGN 7 7 000061 61 a LATIN SMALL LETTER A 8 8 000064 64 d LATIN SMALL LETTER D 9 9 000061 61 a LATIN SMALL LETTER A 10 10 00006D 6D m LATIN SMALL LETTER M 11 11 00003E 3E > GREATER-THAN SIGN 12 12 000020 20 SPACE 13 13 00202E E2 80 AE RIGHT-TO-LEFT OVERRIDE 14 16 000067 67 g LATIN SMALL LETTER G 15 17 00006E 6E n LATIN SMALL LETTER N 16 18 000069 69 i LATIN SMALL LETTER I 17 19 00006B 6B k LATIN SMALL LETTER K 18 20 000072 72 r LATIN SMALL LETTER R 19 21 00006F 6F o LATIN SMALL LETTER O 20 22 000077 77 w LATIN SMALL LETTER W 21 23 000020 20 SPACE 22 24 000074 74 t LATIN SMALL LETTER T 23 25 000027 27 ' APOSTROPHE 24 26 00006E 6E n LATIN SMALL LETTER N 25 27 000073 73 s LATIN SMALL LETTER S 26 28 000069 69 i LATIN SMALL LETTER I 27 29 000020 20 SPACE 28 30 000020 20 SPACE 29 31 00004C 4C L LATIN CAPITAL LETTER L 30 32 000054 54 T LATIN CAPITAL LETTER T 31 33 000052 52 R LATIN CAPITAL LETTER R 32 34 000020 20 SPACE 33 35 000073 73 s LATIN SMALL LETTER S 34 36 000069 69 i LATIN SMALL LETTER I 35 37 000068 68 h LATIN SMALL LETTER H 36 38 000074 74 t LATIN SMALL LETTER T 37 39 00000A 0A LINE FEED (LF) character byte UTF-32 encoded as glyph name 0 0 00005B 5B [ LEFT SQUARE BRACKET 1 1 000053 53 S LATIN CAPITAL LETTER S 2 2 000047 47 G LATIN CAPITAL LETTER G 3 3 00004F 4F O LATIN CAPITAL LETTER O 4 4 00005D 5D ] RIGHT SQUARE BRACKET 5 5 000020 20 SPACE 6 6 00003C 3C < LESS-THAN SIGN 7 7 000061 61 a LATIN SMALL LETTER A 8 8 000064 64 d LATIN SMALL LETTER D 9 9 000061 61 a LATIN SMALL LETTER A 10 10 00006D 6D m LATIN SMALL LETTER M 11 11 00003E 3E > GREATER-THAN SIGN 12 12 000020 20 SPACE 13 13 000301 CC 81 ́ COMBINING ACUTE ACCENT 14 15 000020 20 SPACE 15 16 000074 74 t LATIN SMALL LETTER T 16 17 000068 68 h LATIN SMALL LETTER H 17 18 000069 69 i LATIN SMALL LETTER I 18 19 000073 73 s LATIN SMALL LETTER S 19 20 000020 20 SPACE 20 21 00006C 6C l LATIN SMALL LETTER L 21 22 000069 69 i LATIN SMALL LETTER I 22 23 00006E 6E n LATIN SMALL LETTER N 23 24 000065 65 e LATIN SMALL LETTER E 24 25 000020 20 SPACE 25 26 000073 73 s LATIN SMALL LETTER S 26 27 000074 74 t LATIN SMALL LETTER T 27 28 000061 61 a LATIN SMALL LETTER A 28 29 000072 72 r LATIN SMALL LETTER R 29 30 000074 74 t LATIN SMALL LETTER T 30 31 000073 73 s LATIN SMALL LETTER S 31 32 000020 20 SPACE 32 33 000077 77 w LATIN SMALL LETTER W 33 34 000069 69 i LATIN SMALL LETTER I 34 35 000074 74 t LATIN SMALL LETTER T 35 36 000068 68 h LATIN SMALL LETTER H 36 37 000020 20 SPACE 37 38 000061 61 a LATIN SMALL LETTER A 38 39 000020 20 SPACE 39 40 000063 63 c LATIN SMALL LETTER C 40 41 00006F 6F o LATIN SMALL LETTER O 41 42 00006D 6D m LATIN SMALL LETTER M 42 43 000062 62 b LATIN SMALL LETTER B 43 44 000069 69 i LATIN SMALL LETTER I 44 45 00006E 6E n LATIN SMALL LETTER N 45 46 000069 69 i LATIN SMALL LETTER I 46 47 00006E 6E n LATIN SMALL LETTER N 47 48 000067 67 g LATIN SMALL LETTER G 48 49 000020 20 SPACE 49 50 000061 61 a LATIN SMALL LETTER A 50 51 000063 63 c LATIN SMALL LETTER C 51 52 000075 75 u LATIN SMALL LETTER U 52 53 000074 74 t LATIN SMALL LETTER T 53 54 000065 65 e LATIN SMALL LETTER E 54 55 000020 20 SPACE 55 56 000061 61 a LATIN SMALL LETTER A 56 57 000063 63 c LATIN SMALL LETTER C 57 58 000063 63 c LATIN SMALL LETTER C 58 59 000065 65 e LATIN SMALL LETTER E 59 60 00006E 6E n LATIN SMALL LETTER N 60 61 000074 74 t LATIN SMALL LETTER T 61 62 00000A 0A LINE FEED (LF) -- System Information: Debian Release: 7.6 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: i386 (i686) Kernel: Linux 3.2.0-4-686-pae (SMP w/2 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages irssi depends on: ii libc6 2.13-38+deb7u4 ii libglib2.0-0 2.33.12+really2.32.4-5 ii libncurses5 5.9-10 ii libperl5.14 5.14.2-21+deb7u1 ii libssl1.0.0 1.0.1e-2+deb7u12 ii libtinfo5 5.9-10 ii perl 5.14.2-21+deb7u1 ii perl-base [perlapi-5.14.2] 5.14.2-21+deb7u1 irssi recommends no packages. Versions of packages irssi suggests: ii irssi-scripts 20120326 -- debconf-show failed
