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Way to reproduce:
> set -e TERM
fish: function contains_internal called with null value for argument a.
fish: This is a bug. If you can reproduce it, please send a bug report
to fish-users@lists.sf.net.
fish: Backtrace:
/home/grissiom/sysroot/bin/fish(show_stackframe+0x1a) [0x43519a]
/home/grissiom/sysroot/bin/fish(contains_internal+0xce) [0x4373ee]
/home/grissiom/sysroot/bin/fish(reader_write_title+0x59) [0x424179]
/home/grissiom/sysroot/bin/fish() [0x4242d5]
/home/grissiom/sysroot/bin/fish(reader_readline+0x54) [0x425974]
/home/grissiom/sysroot/bin/fish(reader_read+0xba) [0x42742a]
/home/grissiom/sysroot/bin/fish(main+0x4be) [0x43b19e]
/lib64/libc.so.6(__libc_start_main+0xfd) [0x7fcbe0dcbb6d]
/home/grissiom/sysroot/bin/fish() [0x408c29]
This commit makes fish_parse_opt stop at first non-option argument,
which expected as fish script name and pass the remaining argument to
that script. I also updated the test cases.
Now matches function create behaviour, running the new function name through
wcsfuncname() and parser_keywords_is_reserved(), before allowing the copy.
Copying the function implementation was the main point. Actually removing the original isn't necessary, as that
functionality already exists (functions -e).
Aim is to allow an existing function to be renamed, allowing some basic function chaining.
Example:
> function foo
echo Hello
end
> foo
Hello
> functions --rename foo bar
> foo
fish: Unknown command 'foo'
> bar
Hello
> functions --rename fish_prompt old_prompt
> function fish_prompt
printf "{Boo!}%s" (old_prompt)
end
{Boo!}>
Note in the last case, the new fish_prompt is calling its old definition.
