This adds the ability to limit how many expansions are produced. For
example if $big contains 10 items, and is Cartesian-expanded as
$big$big$big$big... 10 times, we would naviely get 10^10 = 10 billion
results, which fish can't actually handle. Implement this in
completion_receiver_t, which now can return false to indicate an overflow.
The initial expansion limit 'k_default_expansion_limit' is set as 512k
items. There's no way for users to change this at present.
This switches certain uses from just appending to a list to using
completion_receiver_t, in preparation for limiting how many completions
may be produced. Perhaps in time this could also be used for "streaming"
completions.
In preparation for introducing "smart case", refactor string fuzzy
matching. Specifically split out the case folding and match type into
separate fields, so that we can introduce more case folding types without
a combinatoric explosion.
This is used to decide which fuzzy match is better, however it is used
only in wildcard expansion and not in actual completion ranking or
anywhere else where it could matter. Try removing the compare() call
and implementation.
What compare() did specially was compare distances, e.g. it ranks
lib as better than libexec when expanding /u/l/b. But the tests did not
exercise this so it's hard to know if it's working. In preparation for a
refactoring, remove it.
When expanding a string, you may or may not want to generate
descriptions alongside the expanded string. Usually you don't want to
but descriptions were opt out. This commit makes them opt in.
This was originally comparing two pointers for equality but after the
refactor to wcstring it ended up comparing a const string pointer to the
_contents_ of the wcstring.
This commit recognizes an existing pattern: many operations need some
combination of a set of variables, a way to detect cancellation, and
sometimes a parser. For example, tab completion needs a parser to execute
custom completions, the variable set, should cancel on SIGINT. Background
autosuggestions don't need a parser, but they do need the variables and
should cancel if the user types something new. Etc.
This introduces a new triple operation_context_t that wraps these concepts
up. This simplifies many method signatures and argument passing.
This runs build_tools/style.fish, which runs clang-format on C++, fish_indent on fish and (new) black on python.
If anything is wrong with the formatting, we should fix the tools, but automated formatting is worth it.
Mostly related to usage _(L"foo"), keeping in mind the _
macro does a wcstring().c_str() already.
And a smattering of other trivial micro-optimizations certain
to not help tangibly.
Prior to this fix, cding into a symlink and then completing .. would complete
from the physical directory instead of the logical directory, which could not
actually be cd'd to. Teach cd completiond to use the logical directory.
At some point the completion code was refactored and in the event where
no explicit function description was passed into `resolve_description()`
it would attempt to use the `desc_func` parameter but pass in the
_remaining_ part of the completion rather than the full text, which
would obviously fail.
e.g. if completing `foo<TAB>`, for function `foobar` it would attempt to
find the description for a function named `bar` instead of `foobar`.
Closes#5206.
This reverts commit 9c63ad3209 until I can
figure out what is causing the assertion and test failures.
It *seems* to be that passing in the correct function name to the
description lookup is causing a previously present error to be realized,
but I can't yet be certain.
At some point the completion code was refactored and in the event where
no explicit function description was passed into `resolve_description()`
it would attempt to use the `desc_func` parameter but pass in the
_remaining_ part of the completion rather than the full text, which
would obviously fail.
e.g. if completing `foo<TAB>`, for function `foobar` it would attempt to
find the description for a function named `bar` instead of `foodbar`.
Closes#5206.
Migrate the mmap() logic into a new class history_file_contents_t which
will serve to encapsulate conditional logic if we choose to use read()
instead of mmap().
Changed cd completion to differentiate between cd autosuggest and cd tab
completion. cd autosuggest will find deepest unique hierarchy and cd tab
completion will not.
Issue #4402
