STINNER Victor added the comment: Attached readline_disable_meta_key.patch: Implement the workaround suggested in (*), but only use the workaround if stdout is not a TTY (ex: output redirected), to limit the risk of regression.
(*) http://lists.gnu.org/archive/html/bug-readline/2011-04/msg00009.html Extract of the patch: + if (!isatty(STDOUT_FILENO)) { + /* Issue #19884: Don't try to enable any meta modifier key the terminal + claims to support when it is called. On many terminals (ex: + xterm-256color), the meta key is used to send eight-bit characters + (ANSI sequence "\033[1034h"). */ + rl_variable_bind ("enable-meta-key", "off"); + } This issue becomes very annoying on my Fedora 20. The output of any Mercurial command now starts with "\033.[?1034h" (Mercurial uses Python 2.7). Example: haypo@smithers$ hg root|hexdump -C 00000000 1b 5b 3f 31 30 33 34 68 2f 68 6f 6d 65 2f 68 61 |.[?1034h/home/ha| 00000010 79 70 6f 2f 70 72 6f 67 2f 70 79 74 68 6f 6e 2f |ypo/prog/python/| 00000020 64 65 66 61 75 6c 74 0a |default.| 00000028 Fedora 18 changed the default TERM environment variable to "xterm-256color": http://fedoraproject.org/wiki/Features/256_Color_Terminals Workaround in your application (to run on unpatched Python): set the TERM environment variable to "dummy", or unset this variable. ---------- keywords: +patch nosy: +haypo Added file: http://bugs.python.org/file35589/readline_disable_meta_key.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue19884> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
