Previously, when wrapping lines at word boundaries, we would iterate forwards
for "wrap-width" characters, then iterate backwards until we found a word-break,
which was horribly slow.
Now we record the last word-boundary we saw as we iterate forwards, getting a
result in one pass.
Fixes#2339.
Previous Implementation was constantly computing byte/column count
from the begining of the line, leading to a non-linear complexity
with respect to the length of a line.
Fixes#2146
Unfortunately Strings that start with a quoted quote (like '''str')
are still incorrectly highlighted, a deeper refactoring of the regions
highlighter will be necessary.
set-face now takes a scope argument, and faces can be overridden on
a buffer or window basis.
colorscheme apply on global scope, which should be good enough for
now.
Fixes#1411
Reference highlighters allow for potential mutual recursion between
highlighters. This is usually fine, but if the recursion happens on
the same buffer range, it means we will recurse infinitely.
Fixes#1920
To allow more general look arounds out of the actual search range,
pass a second range (the actual subject). This allows us to remove
various flags such as PrevAvailable or NotBeginOfSubject, which are
now easy to check from the subject range.
Fixes#1902
When on an end of line, certain behaviours can be surprising, for
example delete will join the following line (which makes sense, and
is consistent, but hard to predict if we do not know the cursor is
on and end of line).
As Kakoune is moving more and more towards treating end of lines
as any other character, making it clear when the cursor lies on
them seems like a good way to reduce surprise.
Some highlighters, such as wrap or line numbers, are not intended
to be used multiple times on the same display. Add support for unique
ids that are used by highlighters to disable themselves if another
unique highlighter with the same id is supposed to override them.
The usual highlighter "precedence" takes, place, that it, that most
nested highlighter will the the one to run (window in priority to
buffer in priority to global).
