Fix target regex to handle a semicolon

targets : prerequisites ; recipe

Author: drdv

makefile-doc.awk

@@ -1063,7 +1063,7 @@ BEGIN {
   initialize_colors()
 
   VARIABLES_REGEX = VARIABLES_REGEX == "" ? VARIABLES_REGEX_DEFAULT : VARIABLES_REGEX
-  TARGETS_REGEX = TARGETS_REGEX == "" ? "^ *[^.#][ ,a-zA-Z0-9$_/%.(){}-]* *&?(:|::)( |$)" : TARGETS_REGEX
+  TARGETS_REGEX = TARGETS_REGEX == "" ? "^ *[^.#][ ,a-zA-Z0-9$_/%.(){}-]* *&?(:|::)( |$|.*;)" : TARGETS_REGEX
   VARS = VARS == "" ? 1 : VARS
   PADDING = PADDING == "" ? " " : PADDING
   DEPRECATED = DEPRECATED == "" ? 1 : DEPRECATED

test/Makefile.semicolon

@@ -0,0 +1,13 @@
+## 1
+t1:;
+
+## 2
+t2: ;
+
+t3:;@echo 1 ## 3
+
+deps:
+	@echo deps
+
+## 4
+t4:deps; @echo 1

test/recipes/test-help

@@ -3,11 +3,11 @@ Usage: awk [-v option=value] -f makefile-doc.awk [Makefile ...]
 Description: Generate docs for Makefile variables and targets
 Options:
   OUTPUT_FORMAT: ANSI
-  EXPORT_THEME (theme for HTML/LATEX output): 
-  SUB (substitutions): 
-  DEBUG ([bool] output debug info): 
+  EXPORT_THEME (theme for HTML/LATEX output):
+  SUB (substitutions):
+  DEBUG ([bool] output debug info):
   DEBUG_FILE (debug info file): .debug-makefile-doc.org
-  TARGETS_REGEX (regex for matching targets): ^ *[^.#][ ,a-zA-Z0-9$_/%.(){}-]* *&?(:|::)( |$)
+  TARGETS_REGEX (regex for matching targets): ^ *[^.#][ ,a-zA-Z0-9$_/%.(){}-]* *&?(:|::)( |$|.*;)
   VARIABLES_REGEX (regex for matching variables): ^ *( *(override|unexport|export|private) *)* *[^.#][a-zA-Z0-9_-]* *(=|:=|::=|:::=|!=|\?=|\+=)
   VARS ([bool] show documented variables): 1
   PADDING (a padding character between anchors and docs): " "

test/recipes/test-semicolon

@@ -0,0 +1,9 @@
+test/Makefile.semicolon
+-----------------------
+Available targets:
+-----------------------
+t1   1
+t2   2
+t3   3
+t4   4
+-----------------------

test/test-debug-expected-result.org

@@ -3,7 +3,7 @@
 + ~FS~: :
 + ~DEBUG_FILE~: /tmp/.debug-makefile-doc.org
 + ~SUB~: <L:0,M:0>$(TARGET):label:this that
-+ ~TARGETS_REGEX~: ^ *[^.#][ ,a-zA-Z0-9$_/%.(){}-]* *&?(:|::)( |$)
++ ~TARGETS_REGEX~: ^ *[^.#][ ,a-zA-Z0-9$_/%.(){}-]* *&?(:|::)( |$|.*;)
 + ~VARIABLES_REGEX~: ^ *( *(override|unexport|export|private) *)* *[^.#][a-zA-Z0-9_-]* *(=|:=|::=|:::=|!=|\?=|\+=)
 + ~VARS~: 1
 + ~PADDING~: