Add support for shfmt in git pre-commit hook

.husky/pre-commit

@@ -1,8 +1,5 @@
 #!/bin/sh
 
-# Exit on error
-set -e
-
 # Source husky
 # shellcheck disable=SC1091
 . "$(dirname -- "$0")/_/husky.sh"
@@ -14,9 +11,9 @@ printf "Using shell: %s \n" "$(readlink /proc/$$/exe)"
 staged_files=$(git diff --name-only --cached)
 
 # Run taplo on staged TOML files
-staged_toml=$(echo "$staged_files" | grep ".toml$" || true)
-num_staged_toml=$(echo "$staged_toml" | grep -vce '^$')
-if [ "$num_staged_toml" -ne "0" ]; then
+staged_toml=$(echo "$staged_files" | grep '.toml$' || true)
+num_staged_toml=$(echo "$staged_toml" | grep -vce '^$' || true)
+if [ "$num_staged_toml" -gt 0 ]; then
   printf '\nFormatting %s staged TOML files with taplo\n' "$num_staged_toml"
   taplo format "$staged_toml"
   printf "Re-staging\n"
@@ -24,16 +21,26 @@ if [ "$num_staged_toml" -ne "0" ]; then
 fi
 
 # Run lua-format on staged Lua files
-staged_lua=$(echo "$staged_files" | grep ".lua$" || true)
-num_staged_lua=$(echo "$staged_lua" | grep -vce '^$')
-if [ "$num_staged_lua" -ne "0" ]; then
+staged_lua=$(echo "$staged_files" | grep '.lua$' || true)
+num_staged_lua=$(echo "$staged_lua" | grep -vce '^$' || true)
+if [ "$num_staged_lua" -gt 0 ]; then
   printf '\nFormatting %s staged Lua files with lua-format\n' "$num_staged_lua"
   lua-format -i "$staged_lua"
   printf "Re-staging\n\n"
   git add "$staged_lua"
 fi
 
+# Run shfmt on staged shell scripts
+staged_sh=$(echo "$staged_files" | grep -E '(.sh$|pre-commit)' || true)
+num_staged_sh=$(echo "$staged_sh" | grep -vce '^$' || true)
+if [ "$num_staged_sh" -gt 0 ]; then
+  printf '\nFormatting %s staged shell scripts with shfmt\n' "$num_staged_sh"
+  shfmt -w "$staged_sh"
+  printf "Re-staging\n\n"
+  git add "$staged_sh"
+fi
+
 # Run prettier on all other staged files
 # that are supported
-echo "Running prettier on all supported files"
+printf "\nRunning prettier on all supported files\n"
 npx pretty-quick --staged