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authorThomas Schwinge <schwinge@nic-nac-project.de>2009-10-08 14:50:56 +0200
committerThomas Schwinge <schwinge@nic-nac-project.de>2009-10-08 14:51:56 +0200
commitf006d45dda72605da09322dc7941f2ed5629395b (patch)
treea35877e1812b167fa7319126c444a3ec1ccb68ce /open_issues/bash.mdwn
parent924e9702036d8a1506cc6bb07facb18e23494519 (diff)
open_issues/bash_vs_screen_vs_sigint: Separate bash and screen issue.
open_issues/bash: Add more information w.r.t. PROMPT_COMMAND.
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+[[!meta copyright="Copyright © 2009 Free Software Foundation, Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
+
+[[!tag open_issue_porting]]
+
+# *bash* 4.0 vs. typing `C-c` (*SIGINT*)
+
+Will show `-bash: echo: write error: (ipc/mig) wrong reply message ID` unter
+certain conditions.
+
+After having noticed that this error doesn't occur if starting *bash* with
+`--norc`, I isolated it to the following command in `.bashrc`:
+
+ case $TERM in
+ xterm* | rxvt*)
+ PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}:${PWD}\007"';;
+ esac
+
+... and indeed:
+
+ tschwinge@flubber:~ $ echo "$TERM" -- "$PROMPT_COMMAND"
+ xterm -- echo -ne "\033]0;${USER}@${HOSTNAME}:${PWD}\007"
+ tschwinge@flubber:~ $ ^C
+ -bash: echo: write error: (ipc/mig) wrong reply message ID
+ tschwinge@flubber:~ $ PROMPT_COMMAND=
+ tschwinge@flubber:~ $ ^C
+ tschwinge@flubber:~ $
+
+ bash-4.0$ PROMPT_COMMAND='echo >&2 -n foo\ '
+ foo bash-4.0$ ^C
+
+ bash-4.0$ PROMPT_COMMAND='echo >&1 -n foo\ '
+ foo bash-4.0$ ^C
+ bash: echo: write error: (ipc/mig) wrong reply message ID
+
+ bash-4.0$ PROMPT_COMMAND='/bin/echo >&1 -n foo\ '
+ foo bash-4.0$ ^C
+ bash: start_pipeline: pgrp pipe: (ipc/mig) wrong reply message ID
+
+So, there's something different with stdout in / after the SIGINT handler.