Using builtin `commandline -f`, one would expect to have commands executed in
the order that they were given. This motivates the change to a queue.
Unfortunately, fish internals still need lookahead_list to act as a stack. Add
and rename functions to support both cases and have lookahead_list as
a std::deque internally.
This code is delicate, and we should probably dog-food this in nightly for
a while before the next-minor release.
Fixes#1567
Add the --wraps option to 'complete' and 'function'. This allows a
command to (recursively) inherit the completions of a wrapped command.
Fixes#393.
When evaluating a completion, we inspect the entire "wrap chain" for a
command, i.e. we follow the sequence of wrapping until we either hit a
loop (which we silently ignore) or the end of the chain. We then
evaluate completions as if the wrapping command were substituted with
the wrapped command. Currently this only works for commands, i.e.
'complete --command gco --wraps git\ checkout' won't work (that would
seem to encroaching on abbreviations anyways). It might be useful to
show an error message for that case.
The commandline builtin reflects the commandline with the wrapped
command substituted in, so e.g. git completions (which inspect the
command line) will just work. This sort of command line munging is
also performed by 'complete -C' so it's not totally without precedent.
'alias will also now mark its generated function as wrapping the
'target.
Conditionally uninitialized:
- builtin_commandline.cpp:577
- expand.cpp:869
- parse_util.cpp:1036
Initialization of POD structs:
- event.cpp:61
- autoload.cpp:22
References used with va_start:
- common.cpp:608:18
Found with clang-3.4's awesome -Wconditional-uninitialized,
-Wmissing-field-initializers and -Wvarargs.
