update-tables: Improve char width table parsing

Make the script used to parse EastAsianWidth more robust, mapping
ambiguous width characters to double-width ones.

Author: aperezdc

.github/workflows/build.yml

@@ -14,12 +14,13 @@ jobs:
     strategy:
       matrix:
         lua:
-          - "lua 5.1"
-          - "lua 5.2"
-          - "lua 5.3"
-          - "lua 5.4"
-          - "luajit 2.0"
-          - "luajit 2.1"
+          - "5.1"
+          - "5.2"
+          - "5.3"
+          - "5.4"
+          - "5.5"
+          - "luajit-2.0"
+          - "luajit-2.1"
     steps:
       - name: Checkout
         uses: actions/checkout@v6
@@ -30,20 +31,23 @@ jobs:
             .lua/
             .luarocks/
           key: ${{ runner.os }}-${{ matrix.lua }}-${{ hashFiles('.github/workflows/build.yml') }}
+      - name: Setup Lua
+        uses: leafo/gh-actions-lua@v12
+        if: steps.cache.outputs.cache-hit != 'true'
+        with:
+          luaVersion: ${{ matrix.lua }}
+      - name: Setup LuaRocks
+      - uses: leafo/gh-actions-luarocks@v6
       - name: Dependencies
         run: |-
           sudo apt install -y libreadline-dev
-          pip install hererocks
-          hererocks env --${{ matrix.lua }} -rlatest
-          source env/bin/activate
           luarocks install --only-deps $(find luarocks -name '*-scm-*.rockspec' | sort -g | tail -1)
           luarocks install dromozoa-utf8
           luarocks install cluacov
           luarocks install busted
           luarocks install luacov-coveralls
       - name: Test
         run: |-
-          source env/bin/activate
           timeout 120 busted -c
       - name: Coverage Report
         run: |

update-tables

@@ -75,20 +75,21 @@ wide_table () {
 	local tmpfile="${TMPDIR:-/tmp}/update-tables-$$-${RANDOM}"
 	echo "-- Autogenerated from ${WIDE_FILE##*/}"
 	echo 'return {'
-	while read -r item rest ; do
-		if [[ -z ${item} || ${item} = \#* ]] ; then
+	while read -r line ; do
+		if [[ -z ${line} || ${line} = \#* ]] ; then
+			read -r line rest <<< "${line}"
 			if [[ ${rest} = *.txt ]] ; then
 				WIDE_VER=${rest}
 			elif [[ ${rest} = Date:\ 20* || ${rest} = ©\ 20* ]] ; then
 				WIDE_VER="${WIDE_VER}, ${rest}"
 			fi
 			continue
 		fi
-		range=${item%;*}
-		flags=${item#*;}
-		if [[ ${flags} = W* || ${flags} = F* ]] ; then
-			format_range "${range}"
-		fi
+		read -r -a items <<< "${line}"
+		case ${items[2]} in
+			F | W | A )
+				format_range "${items[0]}" ;;
+		esac
 	done > "${tmpfile}"
 	sort "${tmpfile}"
 	rm "${tmpfile}"