Fix broken build when missing shfmt

build.sh

@@ -31,11 +31,27 @@ next() {
 }
 
 # Prints a build step message.
+SMSG_CACHE_MSG=()
+SMSG_CACHE_META=()
+SMSG_EXPECT=1
 smsg() {
-	case "$2" in
-		"SKIP") printc "    %{YELLOW}      %{DIM}%s [skipped]%{CLEAR}\n" "$1" 1>&2;;
-		*)      printc "    %{YELLOW}      %s...%{CLEAR}\n" "$1" 1>&2;;
+	if [[ "$1" != "$SMSG_EXPECT" ]]; then
+		SMSG_CACHE_MSG["$1"]="$2"
+		SMSG_CACHE_META["$1"]="$3"
+		return;
+	fi
+
+	((SMSG_EXPECT++))
+	case "$3" in
+		"SKIP") printc "    %{YELLOW}      %{DIM}%s [skipped]%{CLEAR}\n" "$2" 1>&2;;
+		*)      printc "    %{YELLOW}      %s...%{CLEAR}\n" "$2" 1>&2;;
 	esac
+
+	# Cached messages.
+	echo "${SMSG_CACHE_MSG[$SMSG_EXPECT]}" 1>&2 
+	if [[ -n "${SMSG_CACHE_MSG[$SMSG_EXPECT]}" ]]; then
+		smsg "$SMSG_EXPECT" "${SMSG_CACHE_MSG[$SMSG_EXPECT]}" "${SMSG_CACHE_META[$SMSG_EXPECT]}"
+	fi
 }
 
 # Build step: read
@@ -47,7 +63,7 @@ smsg() {
 # Output:
 #     The file contents.
 step_read() {
-	smsg "Reading"
+	smsg 1 "Reading"
 	cat "$1"
 }
 
@@ -62,7 +78,7 @@ step_read() {
 # Output:
 #      The processed file contents.
 step_preprocess() {
-	smsg "Preprocessing"
+	smsg 2 "Preprocessing"
 
 	local line
 	while IFS='' read -r line; do
@@ -111,12 +127,12 @@ step_preprocess() {
 #     The minified file contents.
 step_minify() {
 	if [[ "$OPT_MINIFY" =~ ^all($|+.*) ]]; then
-		smsg "Minifying" "SKIP"
+		smsg 3 "Minifying" "SKIP"
 		cat
 		return 0
 	fi
 
-	smsg "Minifying"
+	smsg 3 "Minifying"
 	printf "#!/usr/bin/env bash\n"
 	pp_minify | pp_minify_unsafe
 }
@@ -131,7 +147,7 @@ step_minify() {
 #     The compressed self-executable script.
 step_compress() {
 	if ! "$OPT_COMPRESS"; then
-		smsg "Compressing" "SKIP"
+		smsg 4 "Compressing" "SKIP"
 		cat
 		return 0
 	fi
@@ -141,7 +157,7 @@ step_compress() {
 		printf "(exec -a \"\$0\" bash -c 'eval \"\$(cat <&3)\"' \"\$0\" \"\$@\" 3< <(dd bs=1 if=\"\$0\" skip=::: 2>/dev/null | gunzip)); exit \$?;\n"
 	})"
 
-	smsg "Compressing"
+	smsg 4 "Compressing"
 	sed "s/:::/$(wc -c <<< "$wrapper" | bc)/" <<< "$wrapper"
 	gzip
 }
@@ -158,7 +174,7 @@ step_compress() {
 # Output:
 #     The file contents.
 step_write() {
-	smsg "Building"
+	smsg 5 "Building"
 	tee "$1"
 	chmod +x "$1"
 }
@@ -177,12 +193,12 @@ step_write() {
 
 step_write_install() {
 	if [[ "$OPT_INSTALL" != true ]]; then
-		smsg "Installing" "SKIP"
+		smsg 6 "Installing" "SKIP"
 		cat
 		return 0
 	fi
 
-	smsg "Installing"
+	smsg 6 "Installing"
 	tee "$1"
 	chmod +x "$1"
 }
@@ -198,9 +214,14 @@ pp_strip_comments() {
 # Minify a Bash source file.
 # https://github.com/mvdan/sh
 pp_minify() {
-	shfmt -mn
-}
+	if [[ "$OPT_MINIFY" = "none" ]]; then
+		cat
+		return
+	fi
 
+	shfmt -mn
+	return $?
+}
 
 # Minifies the output script (unsafely).
 # Right now, this doesn't do anything.