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Allow trapping SIGINT and SIGTERM in scripts

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This teaches `--on-signal SIGINT` (and by extension `trap cmd SIGINT`)
to work properly in scripts, not just interactively. Note any such
function will suppress the default behavior of exiting. Do this for
SIGTERM as well.
This commit is contained in:
ridiculousfish
2022-05-28 17:19:38 -07:00
parent d83e51a8a2
commit cf2ca56e34
6 changed files with 61 additions and 15 deletions
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doc_src/cmds/trap.rst
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@@ -38,7 +38,7 @@ If *ARG* is absent (and there is a single *REASON*) or ``-``, each specified sig
If *ARG* is not present and **-p** has been supplied, then the trap commands associated with each *REASON* are displayed. If no arguments are supplied or if only **-p** is given, ``trap`` prints the list of commands associated with each signal.
Signal names are case insensitive and the ``SIG`` prefix is optional.
Signal names are case insensitive and the ``SIG`` prefix is optional. Trapping a signal will prevent fish from exiting in response to that signal.
The exit status is 1 if any *REASON* is invalid; otherwise trap returns 0.