Prior to this fix, a "bare variable" in math like 'x + 1' would be
looked up in the environment, i.e. equivalent to '$x + 1'. This appears
to have been done for performance. However this breaks the orthogonality
of fish; performance is not a sufficient justification to give math this
level of built-in power, especially because the performance of math is
not a bottleneck. The implementation is also ugly.
Remove this feature so that variables must be prefixed with the dollar
sign and undergo normal variable expansion. Reading 'git grep' output
does not show any uses of this in fish functions or completions.
Also added to changelog.
Fixes#4393
Squashed commit of the following:
commit fb252e6e10
Author: Mahmoud Al-Qudsi <mqudsi@neosmart.net>
Date: Tue Sep 26 15:52:23 2017 -0500
CHANGELOG.md: kdeconnect-cli, not kdecomplete
commit e031d91c19
Author: Mahmoud Al-Qudsi <mqudsi@neosmart.net>
Date: Tue Sep 26 15:49:59 2017 -0500
fixup! Updated changelog with info about all new and updated completions since 2.6.0
commit 6366a67c21
Author: Mahmoud Al-Qudsi <mqudsi@neosmart.net>
Date: Tue Sep 26 15:36:37 2017 -0500
fixup! Updated changelog with info about all new and updated completions since 2.6.0
commit 281be31eb3
Author: Mahmoud Al-Qudsi <mqudsi@neosmart.net>
Date: Tue Sep 26 15:21:01 2017 -0500
Updated changelog with info about all new and updated completions since 2.6.0
Instead of treating the search term as a literal string to be matched
treat it as a glob. This allows the user to get a more useful set of
results by using the `*` glob character in the search term.
Partial fix for #3136
* Hoist `for` loop control var to enclosing scope
It should be possible to reference the last value assigned to a `for`
loop control var when the loop terminates. This makes it easier to detect
if we broke out of the loop among other things. This change makes fish
`for` loops behave like most other shells.
Fixes#1935
* Remove redundant line
Using a read-only variable like `status` as a for loop control variable
has never worked. But without this change you simply get non-sensical
behavior that leaves you scratching your head in puzzlement. This change
replaces the non-sensical behavior with an explicit error message.
Fixes#4342
The `react_to_variable_change()` function is called whenever a fish var
is set. Even as a consequence of statements like `for x in a b c`. It is
therefore critical that that function be as fast as possible. Especially
when setting the var doesn't have any side-effects which is true something
like 99.9999% of the time.
This change reduces the overhead of `react_to_variable_change()` to
unmeasurable levels. Making the synthetic benchmark in issue #4341
36% faster.
Fixes#4341
