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The "wrap chain" refers to a sequence of commands which wrap other commands, for completion purposes. One possibility is that a wrap chain will produce a combinatorial explosion or even an infinite loop, so there needs to be logic to prevent that. Part of that logic is encapsulated in a visited set (wrap_chain_visited_set_t) to prevent exploring the same item twice. Prior to this change, we stored pairs (command, wrapped_command). But we only really need to store the wrapped command. Switch to that. One consequence is that if a command wraps another command in more than one way, we won't explore both ways. This seems unlikely in practice.
42 lines
1.3 KiB
Fish
42 lines
1.3 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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complete -c recvar --wraps 'A=B recvar'
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complete -C 'recvar '
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# CHECKERR: <E> fish: completion reached maximum recursion depth, possible cycle?
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