Add GNU gettext PO grammar (#5996)

book/src/generated/lang-support.md

@@ -98,6 +98,7 @@
 | pem | ✓ |  |  |  |
 | perl | ✓ | ✓ | ✓ |  |
 | php | ✓ | ✓ | ✓ | `intelephense` |
+| po | ✓ | ✓ |  |  |
 | ponylang | ✓ | ✓ | ✓ |  |
 | prisma | ✓ |  |  | `prisma-language-server` |
 | prolog |  |  |  | `swipl` |

languages.toml

@@ -2193,3 +2193,14 @@ indent = { tab-width = 2, unit = "  " }
 [[grammar]]
 name = "yuck"
 source = { git = "https://github.com/Philipp-M/tree-sitter-yuck", rev = "9e97da5773f82123a8c8cccf8f7e795d140ed7d1" }
+
+[[language]]
+name = "po"
+scope = "source.po"
+file-types = ["po", "pot"]
+roots = []
+comment-token = "#"
+
+[[grammar]]
+name = "po"
+source = { git = "https://github.com/erasin/tree-sitter-po", rev = "417cee9abb2053ed26b19e7de972398f2da9b29e" }

runtime/queries/po/highlights.scm

@@ -0,0 +1,15 @@
+[
+  (msgctxt)
+  (msgid)
+  (msgid_plural)
+  (msgstr)
+]@keyword
+
+(comment) @comment
+(comment (comment_reference (text) @string.special.path))
+(comment (comment_flag (text) @label))
+
+(number) @constant.numeric
+(string) @string
+
+(ERROR) @error

runtime/queries/po/textobjects.scm

@@ -0,0 +1,6 @@
+(msgid) @parameter.inside
+
+(comment) @comment.inside
+(comment)+ @comment.around
+
+