The clustered line storage impl of get_cell() is O(column-index)
as cells have to be iterated in order.
The render pass was calling it 3 times to resolve information
about the cursor; reduce that to just once.
It was also calling it once per cell to determine whether the
cell needed to be replaced with a custom glyph if custom block
glyphs were enabled, making it accidentally quadratic!
While it wasn't especially expensive, it did show up in profiling,
so this commit removes that call: we can cache the block glyph
key in the shaper info which is a better place for it anyway,
so that's what we do.
Similarly, there was some extraneous work to call get_cell
when computing some shaper info; remove that too!
That one might be slightly contentious: the is-followed-by-space
logic used to check the successor cell by index to see if it
was a space, but now looks at the successor shaped glyph to see
if it was a space. That might actually be a better choice, but
it may have some ripple effects.
According to its benchmarks, it's almost 2x faster than
unicode_segmentation. It doesn't appear to make a visible
difference to `time cat bigfile`, but I'll take anything
that gives more headroom for such little effort of switching.
Action is used to encode parsed terminal output and shuttle it between
the thread that does the parsing and the main gui thread that applies
it to the terminal model.
Take it down from 184 bytes to 40 bytes (on 64-bit systems). This seems
to boost `time cat bigfile` by reducing the runtime to ~40% of its prior
duration: down from 8s -> 4.5s on an M1 macbook air.
Size reductions achieved by Box'ing relatively less frequently
used enum variants. The kitty image data variant is particularly
large, and the Window variant is also pretty heavy.
This is a weird attribute TBH.
xterm seems to replace the cells with spaces: copying and pasting
results in spaces.
Kitty ignores it.
VTE doesn't render it but allows copying and pasting.
The latter is now also the behavior in wezterm.
This provides a means for more easily extending the default key
tables without forcing the user to recreate the entire config
for themselves.
wezterm.gui.default_keys is also added by this, but it is likely
not as useful.
There were two problems:
* We weren't correctly invalidating when the hover state changed
(a recent regression caused by recent caching changes)
* We'd underline every link with the same destination on hover,
not just the one under the mouse (longstanding wart)
Recent changes allow the application layer to reference the underlying
Lines directly, so we can restore the original and expected
only-highlight-under-the-mouse by switching to those newer APIs.
Adjust the cache values so that we know to also verify the current
highlight and invalidate.
I was a little surprised to see that this also works with mux client
panes: I was expecting to need to do some follow up on those because
they return copies of Line rather than references to them. That happens
to work because the mux client updates the hyperlinks at the time where
it inserts into its cache. The effect of that is that lines in mux
client panes won't update to new hyperlink rules if they were received
prior to a change in the config.
refs: https://github.com/wez/wezterm/issues/2496
Given this sequence:
ENABLE-UNDERLINE CRLF SGR-RESET
if the CRLF caused the terminal to scroll, the newly created line
at the bottom would be filled in with a "blank" cell that had
the underline attribute set.
That's because we're supposed to preserve the coloring in that
scenario, but we were also preserving other SGR attributes.
This commit explicitly clears out under, over and strikethrough
lines from these blank attributes.
refs: https://github.com/wez/wezterm/issues/2489
Move is_double_wide to a box; it is relatively rare to need
this and we're okay with it being a separate heap allocation
when it is needed if it reduces the size of Line in the common case.
While using here-doc, lines are not expanded for parameter expansion if
a part of starting _word_ (_EOT_ in this case) is quoted. This results
in '$name' parameter appearing in auto-generated link without expansion.
This commit removes the single quotes from here-doc thus sets the
correct tag which is retrieved by '$1'.
Signed-off-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>
When falling back to presentation-ambivalent font lookup, restart
our shaper run from font_idx=0 rather than the current font index.
For:
```
wezterm ls-fonts --text "$(printf \\U1faf0)"
```
the current font index was the last resort font so we'd never
search over anything useful in the second pass.
Looking back at 4fc8dfb374, I can't
see a good reason for starting at the later offset.
This makes the search feel more responsive.
We search from bottom to top so that we show the more recent results
first, but for the sake of efficiency when accumulating result chunks
we need to reverse the order of the results vec from how it was
previously.
Each result chunk is loosely ordered from top to bottom, so we sort
it and reverse it: results[0] is the bottom-most result.
New rows are accumulated on the end of the result array; this is
not only more efficient, but it preverses the match result number
ordering.
The next/prior functions need to be swapped to account for this change
in result order.
refs: https://github.com/wez/wezterm/issues/1209
