Add a release workflow to generate shell files

.github/workflows/build.yml

@@ -0,0 +1,24 @@
+name: 'Release'
+on:
+  pull_request:
+    branches: [master]
+
+jobs:
+  release:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Check out Git repository'
+        uses: actions/checkout@v2
+
+      - name: 'Generate shell files'
+        run: make generate
+
+      - name: 'Commit generated files'
+        if: ${{ success() }}
+        run: |
+          git config user.name 'github-actions'
+          git config user.email 'github-actions@github.com'
+          git add lscolors.sh lscolors.csh
+          git commit -m "Update shell files" || echo "No changes to commit"
+          git push

Makefile

@@ -0,0 +1,20 @@
+FILE_NAME=lscolors
+export XDG_DATA_HOME ?= $${$$HOME/.local/share}
+
+clean:
+	@command rm ${FILE_NAME}.sh 2>/dev/null || true
+	@command rm ${FILE_NAME}.csh 2>/dev/null || true
+
+generate: clean
+	@dircolors -b LS_COLORS > ${FILE_NAME}.sh
+	@dircolors -b LS_COLORS > ${FILE_NAME}.csh
+
+install: generate
+	@command cp ${FILE_NAME}.sh ${FILE_NAME}.csh ${XDG_DATA_HOME}
+	@echo "To enable the colors, add the following line to your shell's start-up script:"
+	@echo ""
+	@echo "For Bourne shell (e.g. ~/.bashrc or ~/.zshrc):"
+	@echo "   source ${XDG_DATA_HOME}/${FILE_NAME}.sh"
+	@echo ""
+	@echo "For C shell (e.g. ~/.cshrc):"
+	@echo "   source ${XDG_DATA_HOME}/${FILE_NAME}.csh"

install.sh

@@ -1,19 +0,0 @@
-#!/usr/bin/env sh
-#
-
-lscolors_data_dir="${XDG_DATA_HOME:-$HOME/.local/share}"
-
-if dircolors -b LS_COLORS > lscolors.sh && dircolors -c LS_COLORS > lscolors.csh ; then
-  if mv -t "$lscolors_data_dir" lscolors.sh lscolors.csh ; then
-    cat <<EOF
-To enable the colors, add the following line to your shell's start-up script:
-
-For Bourne shell (e.g. ~/.bashrc or ~/.zshrc):
-  . "$lscolors_data_dir/lscolors.sh"
-
-For C shell (e.g. ~/.cshrc):
-  . "$lscolors_data_dir/lscolors.csh"
-
-EOF
-  fi
-fi