Add a script to update parsers to latest.

.github/workflows/cd.yml

@@ -13,6 +13,7 @@ jobs:
     runs-on: ${{ matrix.target.os }}
     env:
       PLATFORM: ${{ matrix.target.platform }}
+      TREE_SITTER_VERSION: 0.22.6
     steps:
       - uses: actions/checkout@v2
       - name: Build for ${{ matrix.target.platform }}

lang

@@ -52,7 +52,14 @@ shift
 #          Clone and Build tree-sitter             #
 # ################################################ #
 
-tstag="0.22.6"
+tstag=${TREE_SITTER_VERSION:-$(\
+  git                                                                               \
+    -c 'versionsort.suffix=-' ls-remote --exit-code --refs --sort='version:refname' \
+    --tags https://github.com/tree-sitter/tree-sitter '*.*.*'                       \
+  | tail --lines=1                                                                  \
+  | cut --delimiter='/' --fields=3                                                  \
+  | sed -E 's/v([0-9]+\.[0-9]+)/\1/'                                                \
+)}
 TSS="$PWD/tree-sitter" # Tree Sitter Source
 
 if [ ! -d "$TSS" ]

update/ref

@@ -0,0 +1,15 @@
+# /usr/bin/env bash
+set -euo pipefail
+IFS=$'\n\t'
+set -vx
+
+tree_sitter='https://github.com/tree-sitter/tree-sitter'
+langs=$(cat $PWD/ref | cut -d ':' -f 1)
+
+for lang in $langs
+do
+  ref=$(git ls-remote "$tree_sitter-$lang" refs/heads/master | sed -E 's/^([0-9a-fA-F]+)\s.*$/\1/')
+  echo "$lang:$ref" >> ref.new
+done
+
+mv ref.new ref