Package: netpbm Version: 2:10.0-15.2 Severity: minor File: /usr/bin/ppmtosixel
A sixel image uses a DCS (0x90) in the header and a ST (0x9C) in the footer, however when mixed with utf8, these may be discarded as malformed.using the alternate encodings of ^[P (escape P) for DCS and ^[\ (escape \) for ST avoids this problem and works everywhere I have tested (should work everywhere) at the cost of two bytes per image. I tried using the utf representations of DCS and ST, but support for them appears to be non existent. Seven bit clean appears to be the best practice. An advanced solution would be the addition of a command line option, but i don't think that would be useful except for generating test images. I have attached a little script that makes sixel images 7 bit clean. -- System Information: Debian Release: stretch/sid APT prefers stable APT policy: (500, 'stable') Architecture: i386 (i686) Kernel: Linux 3.16.0-4-686-pae (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init) Versions of packages netpbm depends on: ii libc6 2.19-18 ii libjpeg62-turbo 1:1.4.0-7 ii libnetpbm10 2:10.0-15.2 ii libpng12-0 1.2.50-2+b2 ii libtiff5 4.0.3-13 ii zlib1g 1:1.2.8.dfsg-2+b1 Versions of packages netpbm recommends: ii ghostscript 9.06~dfsg-2 netpbm suggests no packages.
#!/usr/bin/perl -wp use bytes; s!([\x80-\x9f])!qq(\e).chr(ord($1)-64)!ge
