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https://github.com/fish-shell/fish-shell.git
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e88eb508d0
Prior to this change, tab completing with a variable assignment like `VAR=val cmd<tab>` would parse out and apply VAR=val, then recursively invoke completions. This caused some awkwardness around the wrap chain - if a wrapped command had a variable completion we risked infinite recursion. A secondary problem is that we would run any command substitutions inside variable assignment, which the user does not expect to run until pressing enter. With this change, we explicitly track variable assignments encountered during tab completion, including both those explicitly given on the command line and those found during wrap chain walk. We then apply them while suppressing command substitutions.
97 lines
2.9 KiB
Fish
97 lines
2.9 KiB
Fish
#RUN: %fish %s
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# Validate some things about command wrapping.
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set -g LANG C # For predictable error messages.
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# This tests that we do not trigger a combinatorial explosion - see #5638.
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# Ensure it completes successfully.
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complete -c testcommand --wraps "testcommand x "
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complete -c testcommand --wraps "testcommand y "
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complete -c testcommand --no-files -a normal
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complete -C'testcommand '
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# CHECK: normal
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# We get the same completion twice. TODO: fix this.
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# CHECK: normal
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# Test double wraps.
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complete -c testcommand0 -x -a crosswalk
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complete -c testcommand1 -x --wraps testcommand0
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complete -c testcommand2 -x --wraps testcommand1
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complete -C 'testcommand 0'
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# CHECK: crosswalk
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# This tests that a call to complete from within a completion doesn't trigger
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# wrap chain explosion - #5638 again.
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function testcommand2_complete
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set -l tokens (commandline -opc) (commandline -ct)
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set -e tokens[1]
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echo $tokens 1>&2
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end
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complete -c testcommand2 -x -a "(testcommand2_complete)"
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complete -c testcommand2 --wraps "testcommand2 from_wraps "
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complete -C'testcommand2 explicit '
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# CHECKERR: explicit
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# CHECKERR: from_wraps explicit
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# Test that prefixing with a variable assignment works - see #7344.
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complete -c recvar --exclusive -a recvar_comp
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complete -c recvar --wraps 'A=B recvar'
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complete -C 'recvar '
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# CHECK: recvar_comp
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# We get the same completion twice. TODO: fix this.
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# CHECK: recvar_comp
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# Test that completions do not perform subcommands.
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# That is, `FOO=(launch_missiles) command<tab>` does not launch any missiles.
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set -g missile_count 0
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function launch_missiles
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set -g missile_count (math "$missile_count + 1")
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end
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# Ensure missile launching work.
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launch_missiles
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echo $missile_count
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# CHECK: 1
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set -g GOOD global_good
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set -g BAD global_bad
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function do_print_good_bad
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echo "GOOD:$GOOD"
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echo "BAD:$BAD"
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end
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complete -c print_good_bad -x -a '(do_print_good_bad)'
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complete -C 'print_good_bad '
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# CHECK: GOOD:global_good
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# CHECK: BAD:global_bad
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# Key check is completions should expand GOOD but not BAD,
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# because GOOD is just a string but BAD contains a cmdsub
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# which may do arbitrary things.
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complete -C 'GOOD=local_good BAD=(launch_missiles) print_good_bad '
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# CHECK: GOOD:local_good
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# CHECK: BAD:
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# Completion should not have launched any missiles.
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echo $missile_count
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# CHECK: 1
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# Torture test with a bunch of variable assignments.
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# Note this tests the existing behavior when there's conflicts
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# (innermost wrapped command wins) but it's not clear that this is desirable.
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function show_vars
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echo "AAA:$AAA"
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echo "BBB:$BBB"
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echo "CCC:$CCC"
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end
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complete -c show_vars_cmd0 -x -a '(show_vars)'
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complete -c show_vars_cmd1 -x --wraps 'AAA=aaa show_vars_cmd0'
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complete -c show_vars_cmd2 -x --wraps 'AAA=nope BBB=bbb show_vars_cmd1'
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complete -c show_vars_cmd3 -x --wraps 'BBB=nope show_vars_cmd2'
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complete -C 'CCC=ccc show_vars_cmd3 '
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# CHECK: AAA:aaa
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# CHECK: BBB:bbb
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# CHECK: CCC:ccc
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