Add projectile-run-ghostel project terminal commands#2022
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Wire the ghostel terminal emulator (https://github.com/dakra/ghostel) into the C-c p x prefix, mirroring the existing vterm/eat integration: * projectile-run-ghostel (x G) and projectile-run-ghostel-other-window (x 4 G), backed by a shared projectile--ghostel helper. * Load ghostel lazily via `require ... noerror`, so it stays an optional dependency like vterm and eat. * Add entries to the transient menu and the Run... easy-menu. * Document the commands in usage.adoc, projectile_vs_project.adoc and the changelog. The helper let-binds `ghostel-buffer-name` to a project-scoped name; declare that external variable special so the binding is dynamic under lexical-binding. ghostel reuses buffers by stored identity, so reuse keeps working even after it retitles the visible buffer.
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Summary
Wire the ghostel terminal emulator (libghostty-powered, a faster mouse-capable alternative to vterm/eat) into the
C-c p xprefix, mirroring the existing vterm/eat integration:projectile-run-ghostel(x G) andprojectile-run-ghostel-other-window(x 4 G), backed by a sharedprojectile--ghostelhelper.require ... noerror, so it stays an optional dependency just like vterm and eat (no change toPackage-Requires).transientdispatch menu and theRun...easy-menu.usage.adoc,projectile_vs_project.adoc, and the changelog.Implementation notes
ghostel's entry point(ghostel &optional arg)creates its buffer from the dynamic value ofghostel-buffer-nameand reuses buffers by a stored identity rather than the live buffer name — so reuse keeps working even after ghostel asynchronously retitles the visible buffer (OSC 2 / OSC 7). The helper therefore justlet-bindsghostel-buffer-nameto a project-scoped name (viaprojectile-generate-process-name) insideprojectile-with-default-dir, the same shape asprojectile--eat.ghostel-buffer-nameis declared special with a valuelessdefvar(next to the existingeat-buffer-name/eshell-buffer-namedeclarations) so thelet-binding is dynamic under lexical-binding.Testing
emacs -Q --batch -L . -f batch-byte-compile projectile.el— clean, no warnings.x G→projectile-run-ghostel,x 4 G→projectile-run-ghostel-other-window) and that invoking the command without ghostel installed errors withPackage 'ghostel' is not available.C-ufor an extra process) requires ghostel's native module and was not exercised in CI/batch.