split export space is optional

meta_src/scanner.l

@@ -20,14 +20,18 @@ FILE* interface_g = NULL;
 %x LEX_STATE_EXPORT_SPLIT
 %x LEX_STATE_EXPORT_SPLIT_FUNCTION
 %x LEX_STATE_EXPORT_SPLIT_FUNCTION_BODY
+%x LEX_STATE_EXPORT_OPTION
+%x LEX_STATE_EXPORT_OPTION_2
 
 %%
 
 <INITIAL>.  p(code_common);
 <INITIAL>\n p(code_common);
 
-<INITIAL>"$export_common "  BEGIN(LEX_STATE_EXPORT_COMMON);
-<INITIAL>"$$export_split "  BEGIN(LEX_STATE_EXPORT_SPLIT);
+<INITIAL>"$export_common " BEGIN(LEX_STATE_EXPORT_COMMON);
+<INITIAL>"$$export_split " BEGIN(LEX_STATE_EXPORT_SPLIT);
+<INITIAL>"$$export_split"  BEGIN(LEX_STATE_EXPORT_SPLIT);
+<INITIAL>"$export_option " printf("Exporting an option.\n"); BEGIN(LEX_STATE_EXPORT_OPTION);
 
 <LEX_STATE_EXPORT_COMMON>.  p(code_common); p(interface_common);
 <LEX_STATE_EXPORT_COMMON>\n p(code_common); p(interface_common); BEGIN(INITIAL);
@@ -35,7 +39,7 @@ FILE* interface_g = NULL;
 <LEX_STATE_EXPORT_SPLIT>"function"   p(code_g); p(code_w); p(interface_g); p(interface_w); BEGIN(LEX_STATE_EXPORT_SPLIT_FUNCTION);
 <LEX_STATE_EXPORT_SPLIT>"@" ps(code_g,"g"); ps(code_w,"w"); ps(interface_g,"g"); ps(interface_w,"w");
 <LEX_STATE_EXPORT_SPLIT>"$$" BEGIN(INITIAL);
-<LEX_STATE_EXPORT_SPLIT>. p(code_g); p(code_w); p(interface_g); p(interface_w);
+<LEX_STATE_EXPORT_SPLIT>(.|\n) p(code_g); p(code_w); p(interface_g); p(interface_w);
 
 <LEX_STATE_EXPORT_SPLIT_FUNCTION>"{" p(code_g); p(code_w); ps(interface_g, "{return 0;}"); ps(interface_w, "{return 0;}"); BEGIN(LEX_STATE_EXPORT_SPLIT_FUNCTION_BODY);
 <LEX_STATE_EXPORT_SPLIT_FUNCTION>"@" ps(code_g,"g"); ps(code_w,"w"); ps(interface_g,"g"); ps(interface_w,"w");
@@ -44,6 +48,11 @@ FILE* interface_g = NULL;
 <LEX_STATE_EXPORT_SPLIT_FUNCTION_BODY>"$$" BEGIN(INITIAL);
 <LEX_STATE_EXPORT_SPLIT_FUNCTION_BODY>(.|\n) p(code_g); p(code_w);
 
+<LEX_STATE_EXPORT_OPTION>"$" BEGIN(LEX_STATE_EXPORT_OPTION_2);
+<LEX_STATE_EXPORT_OPTION>(.|\n) p(code_g); p(interface_g);
+<LEX_STATE_EXPORT_OPTION_2>"$" BEGIN(INITIAL);
+<LEX_STATE_EXPORT_OPTION_2>(.|\n) p(code_w); p(interface_w);
+
 
 %%