Windows with `macos-titlebar-style = hidden` create new windows when the
new tab binding is pressed. This behavior has existed for a long time.
However, these windows did not cascade, meaning they'd appear overlapped
directly on top of the previous window, which is kind of nasty.
This commit changes it so that new windows created via new tab from a
hidden titlebar window will cascade.
Windows with `macos-titlebar-style = hidden` create new windows when the
new tab binding is pressed. This behavior has existed for a long time.
However, these windows did not cascade, meaning they'd appear overlapped
directly on top of the previous window, which is kind of nasty.
This commit changes it so that new windows created via new tab from a
hidden titlebar window will cascade.
Updates all copyright notices to include "Ghostty contributors" to
reflect the fact that Mitchell is not the sole copyright owner.
Also adds "Ghostty contributors" to the author section in the manpages,
linking https://github.com/ghostty-org/ghostty/graphs/contributors for
proper credit.
This change was discussed in the Discord.
Updates all copyright notices to include "Ghostty contributors" to
reflect the fact that Mitchell is not the sole copyright owner.
Also adds "Ghostty contributors" to the author section in the manpages,
linking https://github.com/ghostty-org/ghostty/graphs/contributors for
proper credit.
This updates our build script and CI to support Xcode 26 and macOS
Tahoe. **This doesn't update the Ghostty app to resolve any Tahoe
issues.**
For CI, we've added a new build job that runs on macOS Tahoe with Xcode
26. I've stopped short of updating our tip release job, since I think I
want to wait until I verify a bit more about Tahoe before we flip that
bit. Also, ideally, we'd run Xcode 26 on Sequoia (macOS 15) for
stability reasons and Namespace doesn't have Xcode 26 on 15 yet.
For builds, this updates our build script to find Metal binaries using
`xcodebuild -find-executable` instead of `xcrun`. The latter doesn't
work with Xcode 26, but the former does and also still works with older
Xcodes. I'm not sure if this is a bug but I did report it: FB17874042.
This updates our build script and CI to support Xcode 26 and macOS
Tahoe. **This doesn't update the Ghostty app to resolve any Tahoe
issues.**
For CI, we've added a new build job that runs on macOS Tahoe with Xcode
26. I've stopped short of updating our tip release job, since I think I
want to wait until I verify a bit more about Tahoe before we flip that
bit. Also, ideally, we'd run Xcode 26 on Sequoia (macOS 15) for
stability reasons and Namespace doesn't have Xcode 26 on 15 yet.
For builds, this updates our build script to find Metal binaries using
`xcodebuild -find-executable` instead of `xcrun`. The latter doesn't
work with Xcode 26, but the former does and also still works with older
Xcodes. I'm not sure if this is a bug but I did report it: FB17874042.
Implements mode 1048 for saving/restoring cursor position.
This is the same as mode 1049 but only saves cursor position without
touching the alternate screen.
**save/restore cursor position:**
- `ESC[?1048h` - save cursor position
- `ESC[?1048l` - restore cursor position
**Quick test:**
```bash
printf '\e[5;10H[SAVED HERE]'
printf '\e[?1048h' # save position
printf '\e[15;1HMoved somewhere else...'
printf '\e[?1048l' # restore
printf ' RESTORED!' # should appear next to [SAVED HERE]
```
Fixes#7473
We previously only showed this message if the user had
`wait-after-command` set to true, since if its false the surface would
close anyways.
With the latest undo feature on macOS, this is no longer the case; a
exited process can be undone and reopened. I considered disallowing
undoing an exited surface, but I think there is value in being able to
go back and recapture output in scrollback if you wanted to.
We previously only showed this message if the user had
`wait-after-command` set to true, since if its false the surface would
close anyways.
With the latest undo feature on macOS, this is no longer the case; a
exited process can be undone and reopened. I considered disallowing
undoing an exited surface, but I think there is value in being able to
go back and recapture output in scrollback if you wanted to.
Fixes#7546
SwiftUI uses type and structure to identify views, which can lead
to issues with tree like structures where the shape and type is the same
but the content changes. This was causing #7546.
To fix this, we need to add explicit identity to the split tree view
so that SwiftUI can differentiate when it needs to redraw the view.
We don't want to blindly add Hashable to SplitTree because we don't want
to take into account all the fields. Instead, we add an explicit
"structural identity" to the SplitTreeView that can be used by SwiftUI.
This PR implements the ability to undo/redo new and closed windows,
tabs, and splits.
## Demo
https://github.com/user-attachments/assets/98601810-71b8-4adb-bfa4-bdfaa2526dc6
## Details
### Undo Timeout
Running terminal sessions _remain running_ for a configurable period of
time after close, during which time they're undoable. This is similar to
"email unsend" (since email in the traditional sense can't be unsent,
clients simply hold onto it for a period of time before sending).
This behavior is not unique to Ghostty. The first and only place I've
seen it is in iTerm2. And iTerm2 behaves similarly, although details of
our behavior and our implementation vary greatly.
The configurable period of time is done via the `undo-timeout`
configuration. The default value is 5 seconds. This feels reasonable to
be and is grounded in being the default for iTerm2 as well, so it's
probably a safe choice.
Undo can be disabled by setting `undo-timeout = 0`.
### Future
The actions that can be potentially undone/redone can be easily expanded
in the future. Some thoughts on things that make sense to me:
- Any sort of split resizing, including equalization
- Moving tabs or splits
#### What about Linux?
I'd love to support this on Linux. I don't think any other terminal on
Linux has this kind of feature (definitely might be wrong, but I've
never seen it and I've looked at a lot of terminal emulators 😄 ). But
there's some work to be done to get there.
## TODO for the Draft PR
This is still a draft. There are some items remaining (list will update
as I go):
- [x] Undoing a closed window is sometimes buggy still and I'm not sure
why, I have to dig into this.
- [x] New window should be undoable
- [x] New tab should be undoable
- [x] Close All Windows should be undoable
- [x] I think I have to get rid of TerminalManager. Undone windows won't
be in TerminalManager's list of controllers and I think that's going to
break a lot of things.
- [x] I haven't tested this with QuickTerminal at all. I expect bugs
there but I want undo to work with splits there.
- [x] Close window with the red traffic light button doesn't trigger
undo
- [x] Closing window with multiple tabs undoes them as separate windows
