diff --git a/sh/core/code.awk b/sh/core/code.awk
index 0e88734..4977eb0 100644
--- a/sh/core/code.awk
+++ b/sh/core/code.awk
@@ -12,7 +12,7 @@ function alias_eval(alias, name, type) {
 	print text "; }"
 }
 
-function append(string) {
+function doc_append(string) {
 	if (doc) {
 		doc = doc "\n"
 	}
@@ -104,6 +104,7 @@ reset()
 
 # parse
 function parse(string) {
+
 	# module
 	if (match(string, RE_MODULE)) {
 		current_match = "module"
@@ -112,12 +113,14 @@ function parse(string) {
 		reset()
 		module = trim(module)
 		shebang = ""
+
 	# shebang
 	} else if (match(string, RE_SHEBANG)) {
 		current_match = "shebang"
 		shebang = string
 		sub("#!", "", shebang)
 		shebang = trim(shebang)
+
 	# other
 	} else {
 		if (module = target) {
@@ -126,6 +129,7 @@ function parse(string) {
 			reset()
 		}
 	}
+
 }
 
 # → main
@@ -137,19 +141,19 @@ if (action == "doc") {
 	# doc
 	if (match($0, RE_DOC)) {
 		if (f) {
-			append($0)
+			doc_append($0)
 		} else {
-			append(extract($0, "doc"))
+			doc_append(extract($0, "doc"))
 		}
 	} else if (match($0, re["alias"])) {
 		matched = extract($0, "alias")
-		append("= " matched)
+		doc_append("= " matched)
 		if (matched == target) {
 			match_alias = 1
 		}
 	} else if (match($0, re["command"])) {
 		matched = extract($0, "command")
-		append("/ " matched)
+		doc_append("/ " matched)
 		if (matched == target) {
 			match_command = 1
 		}
@@ -208,9 +212,9 @@ if (action == "doc") {
 		} else {
 			match_task = 1
 		}
-		append(line ": " $0)
+		doc_append(line ": " $0)
 	} else if (match($0, RE_COMMENT)) {
-		append(line ": " $0)
+		doc_append(line ": " $0)
 	} else {
 		if (match_task) {
 			output_tasks = output_tasks "\n" doc
@@ -222,7 +226,7 @@ if (action == "doc") {
 # function
 } else if (action == "function") {
 	if (match($0, re["command"])) {
-		append(extract($0, "command"))
+		doc_append(extract($0, "command"))
 	} else if (match($0, re["function"])) {
 		split(doc, array, "\n")
 		for (item in array) {
@@ -239,7 +243,7 @@ if (action == "doc") {
 # eval
 } else if (action == "eval") {
 	if (match($0, re[target])) {
-		append(extract($0, target))
+		doc_append(extract($0, target))
 	} else if (match($0, re["function"])) {
 		split(doc, array, "\n")
 		for (item in array) {