regcomp.h: Clean up some comments

diff --git a/regcomp.h b/regcomp.h
index 062bd01..06e179d 100644 (file)
--- a/regcomp.h
+++ b/regcomp.h
@@ -204,15 +204,16 @@ struct regnode_charclass {
     U8 flags;
     U8  type;
     U16 next_off;
-    U32 arg1;
+    U32 arg1;                          /* used as ptr in S_regclass */
     char bitmap[ANYOF_BITMAP_SIZE];    /* only compile-time */
 };
 
-struct regnode_charclass_class {       /* has [[:blah:]] classes */
-    U8 flags;                          /* should have ANYOF_CLASS here */
+/* has runtime (locale) \d, \w, ..., [:posix:] classes */
+struct regnode_charclass_class {
+    U8 flags;                          /* ANYOF_CLASS bit must go here */
     U8  type;
     U16 next_off;
-    U32 arg1;
+    U32 arg1;                                  /* used as ptr in S_regclass */
     char bitmap[ANYOF_BITMAP_SIZE];            /* both compile-time */
     char classflags[ANYOF_CLASSBITMAP_SIZE];   /* and run-time */
 };
@@ -271,7 +272,7 @@ struct regnode_charclass_class {    /* has [[:blah:]] classes */
 #undef STRING
 
 #define        OP(p)           ((p)->type)
-#define FLAGS(p)       ((p)->flags)    /* Caution: Doesn't apply to all
+#define FLAGS(p)       ((p)->flags)    /* Caution: Doesn't apply to all \
                                           regnode types */
 #define        OPERAND(p)      (((struct regnode_string *)p)->string)
 #define MASK(p)                ((char*)OPERAND(p))
@@ -319,12 +320,11 @@ struct regnode_charclass_class {  /* has [[:blah:]] classes */
 #define ANYOF_FOLD             0x02
 #define ANYOF_LOCALE           0x01
 
-/* Used for regstclass only */
-#define ANYOF_EOS              0x10            /* Can match an empty string too */
+/* EOS used for regstclass only */
+#define ANYOF_EOS              0x10    /* Can match an empty string too */
 
-/* There is a character or a range past 0xff */
-#define ANYOF_UNICODE          0x20
-#define ANYOF_UNICODE_ALL      0x40    /* Can match any char past 0xff */
+#define ANYOF_UNICODE          0x20    /* Matches >= one thing past 0xff */
+#define ANYOF_UNICODE_ALL      0x40    /* Matches 0x100 - infinity */
 
 /* Are there any runtime flags on in this node? */
 #define ANYOF_RUNTIME(s)       (ANYOF_FLAGS(s) & 0x0f)