Tags: patch


Bug: After `treesit-explorer-mode` is enabled in a buffer and its
associated `treesit--explorer-buffer` is killed, a subsequent call
to `treesit-explorer-mode` initially displays an empty explorer
buffer b/c `treesit--explorer-refresh` sees old value for
`treesit--explorer-last-node`.

* lisp/treesit.el (treesit-explorer-mode): reset
`treesit--explorer-last-node` when `treesit--explorer-buffer` was killed

In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.33, cairo version 1.16.0) of 2023-10-05 built on noah-X580VD
Repository revision: 505c80623049d9e181918acdac8229c9a2041b1e
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101004
System Description: Ubuntu 22.04.3 LTS

Configured using:
 'configure --prefix=/usr/local --with-modules --with-tree-sitter
--with-threads --with-x-toolkit=gtk3 --with-xwidgets --with-gnutls
--with-json --with-mailutils --with-jpeg --with-png --with-rsvg
--with-tiff --with-xml2 --with-xpm --with-imagemagick CC=gcc-12
CXX=gcc-12'