diff options
| author | Randy Taylor <dev@rjt.dev> | 2023-04-26 11:15:45 -0400 |
|---|---|---|
| committer | Dmitry Gutov <dmitry@gutov.dev> | 2023-05-04 00:56:19 +0300 |
| commit | eaf25b9c6ae4020f76a810b6920b65613ca50e5d (patch) | |
| tree | 8d19f2e6ec5fc33444939102ab6d19ef42905b6b /lisp | |
| parent | cc090294d77c5d4047607d3234c304aaa1b0489c (diff) | |
| download | emacs-eaf25b9c6ae4020f76a810b6920b65613ca50e5d.tar.gz | |
go-ts-mode: Use iota query only if supported (Bug#63086)
iota query support was added on January 5, 2022. To support older
versions of the tree-sitter-go grammar (like the latest tagged version,
v0.19.1, which was released on March 3, 2021), check if the query is
supported before trying to use it.
* lisp/progmodes/go-ts-mode.el (go-ts-mode--iota-query-supported-p): New
function.
(go-ts-mode--font-lock-settings): Use it.
Diffstat (limited to 'lisp')
| -rw-r--r-- | lisp/progmodes/go-ts-mode.el | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/lisp/progmodes/go-ts-mode.el b/lisp/progmodes/go-ts-mode.el index 77c97ffac11..f32a2d75775 100644 --- a/lisp/progmodes/go-ts-mode.el +++ b/lisp/progmodes/go-ts-mode.el @@ -105,6 +105,12 @@ ">>" "%=" ">>=" "--" "!" "..." "&^" "&^=" "~") "Go operators for tree-sitter font-locking.") +(defun go-ts-mode--iota-query-supported-p () + "Returns t if the iota query is supported by the current version of +the tree-sitter-go grammar." + (ignore-errors + (or (treesit-query-string "" '((iota) @font-lock-constant-face) 'go) t))) + (defvar go-ts-mode--font-lock-settings (treesit-font-lock-rules :language 'go @@ -117,7 +123,9 @@ :language 'go :feature 'constant - '([(false) (iota) (nil) (true)] @font-lock-constant-face + `([(false) (nil) (true)] @font-lock-constant-face + ,@(when (go-ts-mode--iota-query-supported-p) + '((iota) @font-lock-constant-face)) (const_declaration (const_spec name: (identifier) @font-lock-constant-face))) |