When returning the title string we prefer to return the OSC 1 Icon
title (which is interpreted as "tab title" by some emulators and
shell toolkits) on the basis that it will have been setup for
display in a more limited width than the overall window title
and will thus likely be a better choice to show to the user.
If OSC 1 hasn't been set then we'll fall back to the OSC 2 window
title as before.
refs: https://github.com/wez/wezterm/issues/247
OSC 1 is defined as setting the "Icon Title".
OSC 2 is defined as setting the "Window Title".
OSC 0 sets both of those.
Some terminal emulators will display the Icon title as the tab
title.
Wezterm doesn't make a distinction between any of those things; the
title is applied (during escape sequence parsing) to the terminal
instance in isolation from any other terminals; when the GUI layer
renders the titlebar it is composed from the title in the active tab.
refs: https://github.com/wez/wezterm/issues/247
I'm wondering if the non-deterministic portion of
refs: https://github.com/wez/wezterm/issues/241
might be due to splitting of data across multiple write calls.
This commit adopts the use of BufWriter around the writer so that
we can buffer up and explicitly flush the responses to the terminal.
This commit teaches the terminal model about the overline attribute
and the SGR codes to enable/disable overline.
The render layer in the GUI doesn't yet understand this attribute.
We were unconditionally adding the encoded form of the modifier
mask (eg: appending `;1~` to the sequence) and not all apps know
how to interpret that.
refs: https://github.com/wez/wezterm/issues/227
While testing this with esctest, it was apparent that xterm deviates
from the DEC docs by allowing a minimum region size smaller than 2,
so adjust our restriction accordingly.
Now that we're reporting a higher level from DA1, apps are asking
more exotic codes. eg: vttest now asks about the conformance level,
but doesn't have a timeout on that request and hangs if we don't
respond.
This commit adds a bit of plumbing to make it easier to consume
and parse DCS sequences that are known to be short/short-lived,
and teaches the term layer to respond to a couple of possible
DECRQSS queries.
This is an xterm sequence that adjusts how the terminal
encodes keyboard output.
This commit teaches termwiz to parse and encode the sequence,
but doesn't teach the terminal emulator to do anything with it
at this time.
I'm adding this because vim sends these sequences and I wanted
to understand what they were for.
This commit adds support for left/right margins and has been
tested against esctest, with a final status of:
```
309 tests passed, 239 known bugs
```
"known bugs" also includes unimplemented features; we have a
similar degree as iTerm2.
As of this commit, we now report as a vt520ish machine to DA1.
I confess to not having read enough of the relevant docs
to know whether this is totally righteous.
With this commit, we now survive a reinstall or upgrade of the nvidia
drivers on my Windows sytem without crashing.
This commit allows notifying the application of the context loss
so the application can either try to reinit opengl or open a new
window as a replacement and init opengl there.
I've not had success at reinitializing opengl after a driver upgrade;
it seems to be persistently stuck in a state where it fails to allocate
a vertex buffer.
SO, the state we have now is that we try to reinit opengl on a new
window, and if that fails, leave it set to the software renderer.
This isn't a perfect UX, but it is better than terminating!
refs: https://github.com/wez/wezterm/issues/156
This was originally intended to be swept in and dealt with as part of
adopting CSI-u (refs: https://github.com/wez/wezterm/issues/63) but the
default shift-space mapping is super irritating in vim (refs:
https://github.com/wez/wezterm/issues/126) so it got partially walked
back, but as a consequence we accidentally dropped the modifiers from
those keys (refs: https://github.com/wez/wezterm/issues/213 refs:
https://github.com/wez/wezterm/issues/214).
This commit restores the modifiers for that case.
In addition, since we now have a way to plumb configuration directly
into the term crate, this adds a config option to enable CSI-u for those
that want to use it.
If the image is smaller than the cell size we could end up
rounding that dimension to zero and ultimately not render
the texture to the cell.
This commit adjusts the math to round up, which yields
better results for the test in refs: https://github.com/wez/wezterm/issues/211
I noticed that we still weren't quite right.
I think the net change is really just that we must force
the use of the CSI representation when using CTRL/SHIFT
modifiers.
refs: https://github.com/wez/wezterm/issues/203
We were treating DECCKM as the sole thing to enable application
cursor reporting, but looking closely at the docs, that mode only
takes effect when both DECANM (Vt52 emulation mode) AND DECKPAM
(application keypad mode) are both active.
neovim enables DECCKM and DECKPAM but not DECANM.
refs: https://github.com/wez/wezterm/issues/203
Bound to CMD-K and CTRL+SHIFT-K by default. This also functions
while the output is filling up (eg: `find /` and hit the key binding
to keep pruning the scrollback).
closes: https://github.com/wez/wezterm/issues/194
The click/movement related events are now "table driven" with
defaults contained in the InputMap object.
This gives the the potential to be configured from the config
file, but there is not glue in the config layer to enable
this yet.
This also does not include mouse wheel events.
neovim will try to force the window to resize after suspend/resume.
No other terminal allows this today, so rather than log it as an
unhandled event, explicitly ignore it.
This was a bit of a pain to track down because this behavior
isn't specified anywhere or called out explicitly.
The issue is that if you use a true color escape sequence such as
```bash
printf "\x1b[38;2;255;100;0mTRUECOLOR\n"
```
the active color would remain active when switching between the
primary and the alt screen until something (eg: `ls --color`) changed
it again.
I hadn't run into this because in my prompt, many many years ago, I had
it set to perform an SGR reset (`\x1b[0m`) as the first thing to ensure
that the shell is in a saner state.
For users that don't do this they end up with a weird looking color
bleed effect.
refs: https://github.com/wez/wezterm/issues/169
The predictive echo feels pretty reasonable, but if the connection
is having problems and we're showing the tardiness indicator, the
echo can give the impression that your input is going to get processed.
That may not be (usually is not!) the case.
This commit makes it a bit more visually distinctive that something
isn't right by greying out the color palette in that case.
refs: https://github.com/wez/wezterm/issues/127
Matching against the current dir when it includes a host and a
path seems like a handy way to automate selecting appropriate
theme/color/profile settings, so I'd like to make sure that
we have the full URL content available for that.
Refs: https://github.com/wez/wezterm/issues/115
Refs: https://github.com/wez/wezterm/issues/117
The rewrap logic makes dealing with the cursor position a bit
more complex and we had a problem where resizing the window shorter
and then taller would allow the shell to cursor up into the scrollback
when displaying its prompt, and allow it to overwrite something that
was logically in the scrollback.
Avoids accidentally moving the y position of the cursor; previously
we would keep it pinned to the physical viewport relative coordinate,
but we didn't account for the implicit scroll that happens when
making the window smaller, which meant that the shell would re-render
its prompt with some artifacts during a resize.
Adds logic to resize handling that will consider the original logical
line length when the width of the terminal is changed.
The intent is that this will cause the text to be re-flowed as if it had
been printed into the terminal at the new width. Lines that were
wrapped due to hittin the margin will be un-wrapped and made into a
single logical line, and then split into chunks of the new width.
This can cause new lines to be generated in the scrollback when
making the terminal narrower. To avoid losing the top of the buffer
in that case, the rewrapping logic will prune blank lines off the
bottom.
This is a pretty simplistic brute force algorithm: each of the lines
will be visited and split, and for large scrollback buffers this could
be relatively costly with a busy live resize. We don't have much choice
in the current implementation.
refs: https://github.com/wez/wezterm/issues/14
Still not perfect; there's a window invalidation missing from
the mux somewhere on higher latency connections that gets
resolved just by moving the mouse :-/
We would leave a copy of the alt screen lines at the top of the
scrollback.
This commit ensures that those lines are marked dirty and that
the dirty bits are propagated to the client to invalidate its cache.
Use StableRowIndex to implement tracking the viewport in the gui layer.
This resolves an issue where a busy terminal would continue to scroll
through the scrollback when you were paging backwards and look weird.
There's still some cleanup though:
- This breaks the selection ui
- the cursor position is wrong when scrolling back
- shift-pageup/pagedown need to be processed in the gui layer
Refs: https://github.com/wez/wezterm/issues/106
Previously we would try to pass through the Backspace and Delete
code points without interference, but that behavior wasn't quite
right.
With this commit our behavior is now:
- At the window layer: Classify a `Backspace` key press as logically
`BS` and a `Delete` key press as logically `DEL` unless the
`swap_backspace_and_delete` is true (macOS is true by default), in
which case `Backspace` is mapped to `Delete` and vice versa.
- At the terminal input layer: A `Backspace` input from the Window sends
the `DEL` sequence to the pty as that matches the default `VERASE` stty
configuration. A `Delete` input from the Window emits `\033[3~`,
which matches up to the `TERMINFO` for `xterm-256color` which we
claim to be compatible with, and is our default `$TERM` value.
The net result of this is that `Backspace` will now start to emit `^?`
which should match folks stty verase. Heads up to @fanzeyi!
I've tested this only on a linux system so far and will follow up on
a macOS system a little later today.
Refs: https://github.com/wez/wezterm/issues/88
Refs: https://github.com/wez/wezterm/issues/63
@fanzeyi ran into part of this issue when using multiplexing;
tabs from a remote domain always used the default color scheme
rather than the local configuration file color scheme.
Another variation on this is that making changes to the `[colors]`
section of the config only impacts tabs created after the change
was loaded, rather than updating the running tabs.
The root of this was that each terminal was keeping its own
copy of the palette that was updated at creation time to reflect
the config file. Relatively recently I introduced a new trait
to allow the terminal state to reach out and obtain configuration
from another source.
This commit connects the terminal configuration layer to the
configuration file directly.
The color schemes are now pulled directly from the configuration
file, except in the case where a dynamic color scheme has been
applied: using escape sequences to change the colors causes
the palette to be forked away from the configuration file.
There's still a low pri TODO around this space: if we're connected
to a remote domain and someone uses dynamic color scheme escapes,
should we reflect those locally? If so then we'll need to build
some plumbing to transport the palette to/from the remote system.
Closes: https://github.com/wez/wezterm/pull/60
This commit:
* Removes the ability to drag the window by the tab bar. I added
that in anticipation of needing to do custom title bar dragging
with Wayland, but it turned out both to be not required and not
possible to drag windows around in that way.
* Replaces the drag logic with dragging the scrollbar thumb
* Clicking above the scrollbar thumb is equivalent to page up
* Clicking below the scrollbar thumb is equivalent to page down
This commit adds a scrollbar that shows the scroll position but
that does not currently allow dragging to scroll.
The scrollbar occupies the right hand side window padding.
The width of the scrollbar can be set by explicitly configuring
`window_padding.right`. If the right padding is set to 0 (which
is its default value), and the scroll bar is enabled then the cell
width will be used for the right padding value instead.
The scrollbar can be enabled/disabled via this config setting:
```
enable_scroll_bar = true
```
Its color by this:
```
[colors]
scrollbar_thumb = "#444444"
```
(Note that color palette config will be reloaded when the config
file is changed, but you'll need to spawn a new tab/window to
see the effects because we cannot assume that a config reload should
always replace a potentially dynamically adjusted color scheme in
a tab).
This commit adds some plumbing for describing the cursor shape
(block, line, blinking etc) and visibility, and feeds that through
the mux and render layers.
The renderer now knows to omit the cursor when it is not visible.
The wayland changes rendered clipboard handling for remote multiplexers
broken, and this commit makes it work again.
It removes the clipboard concept from the the TerminalHost and
keeps it separated as the term::Clipboard concept.
The muxer now has plumbing for passing the Clipboard to its idea
of Windows and Tabs and this is hooked up at window creation and
domain attach time.
This was honestly a PITA because of its complexity. The `clipboard`
crate (now dropped as a dep) didn't support wayland, so I looked at
the `smithay-clipboard` crate, which caused all of my input to become
laggy just by enabling it--even without actually copying or pasting!
Both of those crates try to hide a number of details of working with
the clipboard from the embedding application, but that works against
our window crate implementation, so I decided to integrate it into
the window crate using Futures so that the underlying IPC timing and
potential for the peer to flake out are not completely hidden.
This first commit removes the SystemClipboard type from wezterm
and instead bridges the window crate clipboard to the term crate
Clipboard concept.
The clipboard must be associated with a window in order to function
at all on Wayland, to we place the get/set operations in WindowOps.
This commit effectively breaks the keyboard on the other window
environments; will fix those up in follow on commits.
