a0ce70651a
Bash shell detection was originally disabled in #1823 due to problems
with /bin/bash on macOS.
Apple distributes their own patched version of Bash 3.2 on macOS that
disables the POSIX-style $ENV-based startup path:
e5397a7e74/bash-3.2/shell.c (L1112-L1114)
This means we're unable to perform our automatic shell integration
sequence in this specific environment. Standard Bash 3.2 works fine.
Knowing this, we can re-enable bash shell detection by default unless
we're running "/bin/bash" on Darwin. We can safely assume that's the
unsupported Bash executable because /bin is non-writable on modern macOS
installations due to System Integrity Protection.
macOS users can either manually source our shell integration script
(which otherwise works fine with Apple's Bash) or install a standard
version of Bash from Homebrew or elsewhere.
Shell Integration Code
This is the shell-specific shell-integration code that is used for the shell-integration feature set that Ghostty supports.
This README is meant as developer documentation and not as user documentation. For user documentation, see the main README.
Implementation Details
Bash
Automatic Bash shell integration works by
starting Bash in POSIX mode and using the ENV environment variable to load
our integration script (bash/ghostty.bash). This prevents Bash from loading
its normal startup files, which becomes our script's responsibility (along with
disabling POSIX mode).
Bash shell integration can also be sourced manually from bash/ghostty.bash.
This also works for older versions of Bash.
# Ghostty shell integration for Bash. This must be at the top of your bashrc!
if [ -n "${GHOSTTY_RESOURCES_DIR}" ]; then
builtin source "${GHOSTTY_RESOURCES_DIR}/shell-integration/bash/ghostty.bash"
fi
Note
The version of Bash distributed with macOS (
/bin/bash) does not support automatic shell integration. You'll need to manually source the shell integration script (as shown above). You can also install a standard version of Bash from Homebrew or elsewhere and set it as your shell.
Elvish
For Elvish, $GHOSTTY_RESOURCES_DIR/src/shell-integration
contains an ./elvish/lib/ghostty-integration.elv file.
Elvish, on startup, searches for paths defined in XDG_DATA_DIRS
variable for ./elvish/lib/*.elv files and imports them. They are thus
made available for use as modules by way of use <filename>.
Ghostty launches Elvish, passing the environment with XDG_DATA_DIRSprepended
with $GHOSTTY_RESOURCES_DIR/src/shell-integration. It contains
./elvish/lib/ghostty-integration.elv. The user can then import it
by use ghostty-integration, which will run the integration routines.
The Elvish shell integration is supported by the community and is not officially supported by Ghostty. We distribute it for ease of access and use but do not provide support for it. If you experience issues with the Elvish shell integration, I welcome any contributions to fix them. Thank you!
Fish
For Fish, Ghostty prepends to the
XDG_DATA_DIRS directory. Fish automatically loads configuration
files in <XDG_DATA_DIR>/fish/vendor_conf.d/*.fish on startup,
allowing us to automatically integrate with the shell. For details
on the Fish startup process, see the
Fish documentation.
Zsh
For zsh, Ghostty sets ZDOTDIR so that it loads our configuration
from the zsh directory. The existing ZDOTDIR is retained so that
after loading the Ghostty shell integration the normal Zsh loading
sequence occurs.
if [[ -n $GHOSTTY_RESOURCES_DIR ]]; then
"$GHOSTTY_RESOURCES_DIR"/shell-integration/zsh/ghostty-integration
fi