diff --git a/sh/core/code.awk b/sh/core/code.awk
index 0e5f26a..190c636 100644
--- a/sh/core/code.awk
+++ b/sh/core/code.awk
@@ -1,235 +1,237 @@
+# code
+
 function alias_eval(alias, name, type) {
-    text = alias "() { "
-    if (type == "function") {
-        text = text name " \"${@}\""
-    } else if (type == "variable") {
-        text = text "echo \"${" name "}\""
-    }
-    print text "; }"
+	text = alias "() { "
+	if (type == "function") {
+		text = text name " \"${@}\""
+	} else if (type == "variable") {
+		text = text "echo \"${" name "}\""
+	}
+	print text "; }"
 }
 
 function append(line) {
-    if (doc) {
-        doc = doc "\n"
-    }
-    doc = doc line
+	if (doc) {
+		doc = doc "\n"
+	}
+	doc = doc line
 }
 
 function extract(string, type) {
-    if (type == "alias") {
-        split(string, array, "#=")
-        return trim(array[2])
-    } else if (type == "command") {
-        split(string, array, "#/")
-        return trim(array[2])
-    } else if (type == "doc") {
-        split(string, array, "#")
-        return trim(array[2])
-    } else if (type == "function") {
-        split(string, array, "(")
-        return trim(array[1])
-    } else if (type == "module") {
-        split(string, array, "#\\.")
-        return trim(array[2])
-    } else if (type == "shebang") {
-        split(string, array, "#!")
-        return trim(array[2])
-    } else if ((type == "constant") || (type == "variable")) {
-        split(string, array, "=")
-        return trim(array[1])
-    }
+	if (type == "alias") {
+		split(string, array, "#=")
+		return trim(array[2])
+	} else if (type == "command") {
+		split(string, array, "#/")
+		return trim(array[2])
+	} else if (type == "doc") {
+		split(string, array, "#")
+		return trim(array[2])
+	} else if (type == "function") {
+		split(string, array, "(")
+		return trim(array[1])
+	} else if (type == "module") {
+		split(string, array, "#\\.")
+		return trim(array[2])
+	} else if (type == "shebang") {
+		split(string, array, "#!")
+		return trim(array[2])
+	} else if ((type == "constant") || (type == "variable")) {
+		split(string, array, "=")
+		return trim(array[1])
+	}
 }
 
 function output(name, type) {
-    print "↙ " type
-    print name
-    print doc
-    exit
+	print "↙ " type
+	print name
+	print doc
+	exit
 }
 
 function reset() {
-    if (f == "") {
-        doc = ""
-    }
+	if (f == "") {
+		doc = ""
+	}
 }
 
 function trim(string) {
-    text = string
-    sub("^[\t ]*", "", text)
-    sub("[\t ]*$", "", text)
-    return text
+	text = string
+	sub("^[\t ]*", "", text)
+	sub("[\t ]*$", "", text)
+	return text
 }
 
 BEGIN {
-    RE_ANY = "(.*)"
-    RE_BEGIN = "^"
-    RE_CONST = "([_A-Z][_0-9A-Z]*)"
-    RE_SET = "=.*"
-    RE_SPACE = "[[:space:]]"
-    RE_TSK = "(FIXME|TODO)"
-    RE_VAR = "([_a-z][_0-9a-z]*)"
+	RE_ANY = "(.*)"
+	RE_BEGIN = "^"
+	RE_CONST = "([_A-Z][_0-9A-Z]*)"
+	RE_SET = "=.*"
+	RE_SPACE = "[[:space:]]"
+	RE_TSK = "(FIXME|TODO)"
+	RE_VAR = "([_a-z][_0-9a-z]*)"
 
-    RE_SPACES = RE_SPACE "*"
+	RE_SPACES = RE_SPACE "*"
 
-    RE_END = RE_SPACES "$"
-    RE_FUNC = RE_SPACES "\\(" RE_SPACES "\\)" RE_SPACES "{"
+	RE_END = RE_SPACES "$"
+	RE_FUNC = RE_SPACES "\\(" RE_SPACES "\\)" RE_SPACES "{"
 
-    re["alias"] = RE_BEGIN "#=" RE_SPACES RE_VAR RE_END
-    re["binary"] = RE_BEGIN "#\\|" RE_SPACES RE_VAR RE_END
-    RE_CLOSE = RE_BEGIN "}" RE_SPACES RE_END
-    re["command"] = RE_BEGIN "#/" RE_SPACES RE_VAR RE_END
-    RE_COMMENT = RE_BEGIN "#" RE_ANY RE_END
-    re["constant"] = RE_BEGIN RE_CONST RE_SET RE_END
-    RE_DOC = RE_BEGIN RE_SPACES "#" RE_SPACE RE_ANY RE_END
-    re["function"] = RE_BEGIN RE_VAR RE_FUNC RE_END
-    RE_MODULE = RE_BEGIN "#\\." RE_SPACES RE_ANY RE_END
-    RE_SHEBANG = RE_BEGIN "#!" RE_SPACES RE_ANY RE_END
-    RE_TASK = RE_BEGIN RE_SPACES "#" RE_SPACES RE_TSK RE_ANY RE_END
-    re["variable"] = RE_BEGIN RE_VAR RE_SET RE_END
+	re["alias"] = RE_BEGIN "#=" RE_SPACES RE_VAR RE_END
+	re["binary"] = RE_BEGIN "#\\|" RE_SPACES RE_VAR RE_END
+	RE_CLOSE = RE_BEGIN "}" RE_SPACES RE_END
+	re["command"] = RE_BEGIN "#/" RE_SPACES RE_VAR RE_END
+	RE_COMMENT = RE_BEGIN "#" RE_ANY RE_END
+	re["constant"] = RE_BEGIN RE_CONST RE_SET RE_END
+	RE_DOC = RE_BEGIN RE_SPACES "#" RE_SPACE RE_ANY RE_END
+	re["function"] = RE_BEGIN RE_VAR RE_FUNC RE_END
+	RE_MODULE = RE_BEGIN "#\\." RE_SPACES RE_ANY RE_END
+	RE_SHEBANG = RE_BEGIN "#!" RE_SPACES RE_ANY RE_END
+	RE_TASK = RE_BEGIN RE_SPACES "#" RE_SPACES RE_TSK RE_ANY RE_END
+	re["variable"] = RE_BEGIN RE_VAR RE_SET RE_END
 
-    f = ""
-    match_alias = 0
-    match_command = 0
-    match_module = 0
-    match_task = 0
-    reset()
+	f = ""
+	match_alias = 0
+	match_command = 0
+	match_module = 0
+	match_task = 0
+	reset()
 }
 
 {
-    if (action == "filter") {
-        if (match($0, re[target])) {
-            unique[extract($0, target)] = ""
-        }
-    } else if (action == "tasks") {
-        line++
-        if (match($0, RE_MODULE)) {
-            line = 1
-            if (output_tasks) {
-                print ""
-                print output_module
-                print output_tasks
-                output_tasks = ""
-            }
-            doc = ""
-            match_task = 0
-            output_module = ". " extract($0, "module")
-        } else if (match($0, RE_TASK)) {
-            if (target) {
-                if (target == extract($0, "task")) {
-                    match_task = 1
-                }
-            } else {
-                match_task = 1
-            }
-            append(line ": " $0)
-        } else if (match($0, RE_COMMENT)) {
-            append(line ": " $0)
-        } else {
-            if (match_task) {
-                output_tasks = output_tasks "\n" doc
-            }
-            doc = ""
-            match_task = 0
-        }
-    } else if (action == "eval") {
-        if (match($0, re[target])) {
-            append(extract($0, target))
-        } else if (match($0, re["function"])) {
-            split(doc, array, "\n")
-            for (item in array) {
-                alias_eval(array[item], extract($0, "function"), "function")
-            }
-            reset()
-        } else {
-            reset()
-        }
-    } else if (action == "function") {
-        if (match($0, re["command"])) {
-            append(extract($0, "command"))
-        } else if (match($0, re["function"])) {
-            split(doc, array, "\n")
-            for (item in array) {
-                if (array[item] == target) {
-                    print extract($0, "function")
-                    exit
-                }
-            }
-            reset()
-        } else {
-            reset()
-        }
-    } else if (action == "doc") {
-        # doc
-        if (match($0, RE_SHEBANG)) {
-            append("! " extract($0, "shebang"))
-        } else if (match($0, RE_DOC)) {
-            if (f) {
-                append($0)
-            } else {
-                append(extract($0, "doc"))
-            }
-        } else if (match($0, re["alias"])) {
-            matched = extract($0, "alias")
-            append("= " matched)
-            if (matched == target) {
-                match_alias = 1
-            }
-        } else if (match($0, re["command"])) {
-            matched = extract($0, "command")
-            append("/ " matched)
-            if (matched == target) {
-                match_command = 1
-            }
-        # set
-        } else if (match($0, re["constant"])) {
-            matched = extract($0, "constant")
-            if (matched == target) {
-                output(matched, "constant")
-            } else {
-                reset()
-            }
-        } else if (match($0, re["variable"])) {
-            matched = extract($0, "variable")
-            if (matched == target) {
-                output(matched, "variable")
-            } else {
-                reset()
-            }
-        # others
-        } else if (match($0, RE_MODULE)) {
-            reset()
-            if (extract($0, "module") == target) {
-                match_module = 1
-            }
-        } else if (match($0, re["function"])) {
-            f = extract($0, "function")
-        } else if (match($0, RE_CLOSE)) {
-            if (match_alias) {
-                print "= " target
-                output(f, "function")
-            } else if (match_command) {
-                print "/ " target
-                output(f, "function")
-            } else if (f == target) {
-                output(f, "function")
-            } else {
-                f = ""
-                reset()
-            }
-        } else {
-            if (match_module) {
-                output(target, "module")
-            } else {
-                reset()
-            }
-        }
-    }
+	if (action == "filter") {
+		if (match($0, re[target])) {
+			unique[extract($0, target)] = ""
+		}
+	} else if (action == "tasks") {
+		line++
+		if (match($0, RE_MODULE)) {
+			line = 1
+			if (output_tasks) {
+				print ""
+				print output_module
+				print output_tasks
+				output_tasks = ""
+			}
+			doc = ""
+			match_task = 0
+			output_module = ". " extract($0, "module")
+		} else if (match($0, RE_TASK)) {
+			if (target) {
+				if (target == extract($0, "task")) {
+					match_task = 1
+				}
+			} else {
+				match_task = 1
+			}
+			append(line ": " $0)
+		} else if (match($0, RE_COMMENT)) {
+			append(line ": " $0)
+		} else {
+			if (match_task) {
+				output_tasks = output_tasks "\n" doc
+			}
+			doc = ""
+			match_task = 0
+		}
+	} else if (action == "eval") {
+		if (match($0, re[target])) {
+			append(extract($0, target))
+		} else if (match($0, re["function"])) {
+			split(doc, array, "\n")
+			for (item in array) {
+				alias_eval(array[item], extract($0, "function"), "function")
+			}
+			reset()
+		} else {
+			reset()
+		}
+	} else if (action == "function") {
+		if (match($0, re["command"])) {
+			append(extract($0, "command"))
+		} else if (match($0, re["function"])) {
+			split(doc, array, "\n")
+			for (item in array) {
+				if (array[item] == target) {
+					print extract($0, "function")
+					exit
+				}
+			}
+			reset()
+		} else {
+			reset()
+		}
+	} else if (action == "doc") {
+		# doc
+		if (match($0, RE_SHEBANG)) {
+			append("! " extract($0, "shebang"))
+		} else if (match($0, RE_DOC)) {
+			if (f) {
+				append($0)
+			} else {
+				append(extract($0, "doc"))
+			}
+		} else if (match($0, re["alias"])) {
+			matched = extract($0, "alias")
+			append("= " matched)
+			if (matched == target) {
+				match_alias = 1
+			}
+		} else if (match($0, re["command"])) {
+			matched = extract($0, "command")
+			append("/ " matched)
+			if (matched == target) {
+				match_command = 1
+			}
+		# set
+		} else if (match($0, re["constant"])) {
+			matched = extract($0, "constant")
+			if (matched == target) {
+				output(matched, "constant")
+			} else {
+				reset()
+			}
+		} else if (match($0, re["variable"])) {
+			matched = extract($0, "variable")
+			if (matched == target) {
+				output(matched, "variable")
+			} else {
+				reset()
+			}
+		# others
+		} else if (match($0, RE_MODULE)) {
+			reset()
+			if (extract($0, "module") == target) {
+				match_module = 1
+			}
+		} else if (match($0, re["function"])) {
+			f = extract($0, "function")
+		} else if (match($0, RE_CLOSE)) {
+			if (match_alias) {
+				print "= " target
+				output(f, "function")
+			} else if (match_command) {
+				print "/ " target
+				output(f, "function")
+			} else if (f == target) {
+				output(f, "function")
+			} else {
+				f = ""
+				reset()
+			}
+		} else {
+			if (match_module) {
+				output(target, "module")
+			} else {
+				reset()
+			}
+		}
+	}
 }
 
 END {
-    if (action == "filter") {
-        for (item in unique) {
-            print item
-        }
-    }
+	if (action == "filter") {
+		for (item in unique) {
+			print item
+		}
+	}
 }