diff --git a/sh/alias/git.sh b/sh/alias/git.sh
index 3e6386e..4519028 100644
--- a/sh/alias/git.sh
+++ b/sh/alias/git.sh
@@ -1,3 +1,5 @@
+# large set of aliases for git commands
+
 RWX_GIT_LOG_FORMAT="\
 %C(auto)%h%d
 S %C(red)%GS
diff --git a/sh/doc.awk b/sh/doc.awk
deleted file mode 100644
index f36b7b6..0000000
--- a/sh/doc.awk
+++ /dev/null
@@ -1,83 +0,0 @@
-function append(line) {
-    if (doc) {
-        doc = doc "\n"
-    }
-    doc = doc line
-}
-
-function output(name) {
-    print name
-    print doc
-    exit
-}
-
-function reset() {
-    doc = ""
-}
-
-BEGIN {
-    RE_ANY = "(.*)"
-    RE_NAME = "([_A-Za-z][_0-9A-Za-z]*)"
-    RE_SPACE = "[[:space:]]"
-    RE_SPACES = RE_SPACE "*"
-
-    RE_BEGIN = "^"
-    RE_END = RE_SPACES "$"
-    RE_FUNC = RE_SPACES "\\(" RE_SPACES "\\)" RE_SPACES "{"
-
-    RE_ALIAS = RE_BEGIN "#\\(" RE_SPACES RE_NAME RE_END
-    RE_DOC = RE_BEGIN "#" RE_SPACE RE_ANY RE_END
-    RE_FUNCTION = RE_BEGIN RE_NAME RE_FUNC RE_END
-    RE_MODULE = RE_BEGIN "#." RE_SPACES RE_NAME RE_END
-    RE_SET = RE_BEGIN RE_NAME "=.*" RE_END
-    RE_SHEBANG = RE_BEGIN "#!" RE_SPACES RE_ANY RE_END
-
-    alias = 0
-    reset()
-    module = 0
-}
-
-{
-    # doc
-    if (match($0, RE_SHEBANG, m)) {
-        append("shebang: " m[1])
-    } else if (match($0, RE_DOC, m)) {
-        append(m[1])
-    } else if (match($0, RE_ALIAS, m)) {
-        append("alias: " m[1])
-        if (m[1] == target) {
-            alias = 1
-        }
-    # not doc
-    } else if (match($0, RE_MODULE, m)) {
-        reset()
-        if (m[1] == target) {
-            module = 1
-        }
-    } else if (match($0, RE_SET, m)) {
-        if (m[1] == target) {
-            printf "set: "
-            output(m[1])
-        } else {
-            reset()
-        }
-    } else if (match($0, RE_FUNCTION, m)) {
-        if (alias) {
-            print "alias: " target
-            printf "function: "
-            output(m[1])
-        } else if (m[1] == target) {
-            printf "function: "
-            output(target)
-        } else {
-            reset()
-        }
-    } else {
-        if (module) {
-            printf "module: "
-            output(target)
-        } else {
-            reset()
-        }
-    }
-}
diff --git a/sh/main.awk b/sh/main.awk
new file mode 100644
index 0000000..a64d8cd
--- /dev/null
+++ b/sh/main.awk
@@ -0,0 +1,108 @@
+function append(line) {
+    if (doc) {
+        doc = doc "\n"
+    }
+    doc = doc line
+}
+
+function output(name) {
+    print name
+    print doc
+    exit
+}
+
+function reset() {
+    doc = ""
+}
+
+BEGIN {
+    RE_ANY = "(.*)"
+    RE_CONST = "([_A-Z][_0-9A-Z]*)"
+    RE_SET = "=.*"
+    RE_SPACE = "[[:space:]]"
+    RE_SPACES = RE_SPACE "*"
+    RE_VAR = "([_a-z][_0-9a-z]*)"
+
+    RE_BEGIN = "^"
+    RE_END = RE_SPACES "$"
+    RE_FUNC = RE_SPACES "\\(" RE_SPACES "\\)" RE_SPACES "{"
+
+    RE_ALIAS = RE_BEGIN "#\\(" RE_SPACES RE_VAR RE_END
+    RE_CONSTANT = RE_BEGIN RE_CONST RE_SET RE_END
+    RE_DOC = RE_BEGIN "#" 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_VARIABLE = RE_BEGIN RE_VAR RE_SET RE_END
+
+    alias = 0
+    reset()
+    module = 0
+}
+
+{
+    if (action == "alias") {
+        if (match($0, RE_ALIAS, m)) {
+            append(m[1])
+        } else if (match($0, RE_FUNCTION, m)) {
+            n = split(doc, array, "\n")
+            for (i = 1; i<= n; i++) {
+                print array[i] "() { " m[1] " \"${@}\" ; }"
+            }
+            reset()
+        } else {
+            reset()
+        }
+    } else if (action == "doc") {
+        # doc
+        if (match($0, RE_SHEBANG, m)) {
+            append("shebang: " m[1])
+        } else if (match($0, RE_DOC, m)) {
+            append(m[1])
+        } else if (match($0, RE_ALIAS, m)) {
+            append("alias: " m[1])
+            if (m[1] == target) {
+                alias = 1
+            }
+        # set
+        } else if (match($0, RE_CONSTANT, m)) {
+            if (m[1] == target) {
+                printf "constant: "
+                output(m[1])
+            } else {
+                reset()
+            }
+        } else if (match($0, RE_VARIABLE, m)) {
+            if (m[1] == target) {
+                printf "variable: "
+                output(m[1])
+            } else {
+                reset()
+            }
+        # others
+        } else if (match($0, RE_MODULE, m)) {
+            reset()
+            if (m[1] == target) {
+                module = 1
+            }
+        } else if (match($0, RE_FUNCTION, m)) {
+            if (alias) {
+                print "alias: " target
+                printf "function: "
+                output(m[1])
+            } else if (m[1] == target) {
+                printf "function: "
+                output(target)
+            } else {
+                reset()
+            }
+        } else {
+            if (module) {
+                printf "module: "
+                output(target)
+            } else {
+                reset()
+            }
+        }
+    }
+}
diff --git a/sh/main.sh b/sh/main.sh
index fb323d8..f2d7a7a 100755
--- a/sh/main.sh
+++ b/sh/main.sh
@@ -32,6 +32,7 @@ esac
 RWX_ROOT_SYSTEM="/usr/local/lib/${RWX_SELF_NAME}"
 RWX_SELF_USER="${HOME}/${RWX_SELF_NAME}"
 
+RWX_AWK="${RWX_ROOT_SYSTEM}/${RWX_MAIN_NAME%.sh}.awk"
 RWX_MAIN_PATH="${RWX_ROOT_SYSTEM}/${RWX_MAIN_NAME}"
 
 # ╭──────┬──────╮
@@ -64,6 +65,9 @@ rwx_main() {
 # │ main │ cache │
 # ╰──────┴───────╯
 
+# cache of all sourced code modules
+_rwx_code=""
+
 # cache source code of a module
 # inside a global code variable
 rwx_cache() {
@@ -74,7 +78,7 @@ rwx_cache() {
 	local text
 	text="$(cat "${path}")"
 	# all source code
-	RWX_CODE="${RWX_CODE}\
+	_rwx_code="${_rwx_code}\
 #. ${name}
 ${text}
 "
@@ -181,17 +185,31 @@ RWX_REGEX_TARGET_FUNCTION="\
 ${RWX_REGEX_BEGIN}\\(${RWX_REGEX_FUNCTION}\\)${RWX_REGEX_OPEN}"
 
 rwx_parse_code() {
+	# parse aliases
+	local line
+	RWX_ALIASES="$(rwx_parse_aliases)"
+	while IFS= read -r line; do
+		eval "${line}"
+	done <<EOF
+${RWX_ALIASES}
+EOF
 	# parse constants
 	RWX_CONSTANTS="$(rwx_parse_constants)"
 	# parse functions
 	RWX_FUNCTIONS="$(rwx_parse_functions)"
 }
+rwx_parse_aliases() {
+	printf "%s" "${_rwx_code}" |
+		awk \
+			--assign action="alias" \
+			--file "${RWX_AWK}"
+}
 rwx_parse_constants() {
-	printf "%s\n" "${RWX_CODE}" |
+	printf "%s\n" "${_rwx_code}" |
 		sed --silent "s|${RWX_REGEX_TARGET_CONSTANT}|\\1|p"
 }
 rwx_parse_functions() {
-	printf "%s\n" "${RWX_CODE}" |
+	printf "%s\n" "${_rwx_code}" |
 		sed --silent "s|${RWX_REGEX_TARGET_FUNCTION}|\\1|p"
 }
 
@@ -207,10 +225,12 @@ rwx_test() {
     # TODO variables
     set \
         "main" \
-        "self" \
+        "alias/git" \
         \
         "RWX_MAIN_NAME" \
         \
+        "_rwx_code" \
+        \
         "rwx_cache" \
         \
         "gsc"
diff --git a/sh/self.sh b/sh/self.sh
index 169921a..901c588 100644
--- a/sh/self.sh
+++ b/sh/self.sh
@@ -5,10 +5,11 @@
 rwx_doc() {
 	local name="${1}"
 	[ -n "${name}" ] || return
-	printf "%s" "${RWX_CODE}" |
+	printf "%s" "${_rwx_code}" |
 		awk \
-			-f "${RWX_ROOT_SYSTEM}/doc.awk" \
-			-v target="${name}"
+			--assign action="doc" \
+			--assign target="${name}" \
+			--file "${RWX_AWK}"
 }
 
 rwx_doc_old() {
@@ -55,7 +56,7 @@ rwx_doc_old() {
 				;;
 		esac
 	done <<EOF
-${RWX_CODE}
+${_rwx_code}
 EOF
 }