Let's undocument -Dusesfio in INSTALL.

[perl5.git] / regcomp.h

diff --git a/regcomp.h b/regcomp.h
index e7b5a2c..f7082bf 100644 (file)
--- a/regcomp.h
+++ b/regcomp.h
@@ -15,6 +15,12 @@ typedef OP OP_4tree;                 /* Will be redefined later. */
 #define PERL_ENABLE_EXTENDED_TRIE_OPTIMISATION 1
 #define PERL_ENABLE_POSITIVE_ASSERTION_STUDY 1
 #define PERL_ENABLE_EXPERIMENTAL_REGEX_OPTIMISATIONS 0
+/* Unless the next line is uncommented it is illegal to combine lazy 
+   matching with possessive matching. Frankly it doesn't make much sense 
+   to allow it as X*?+ matches nothing, X+?+ matches a single char only, 
+   and X{min,max}?+ matches min times only.
+ */
+/* #define REG_ALLOW_MINMOD_SUSPEND */
 
 /*
  * The "internal use only" fields in regexp.h are present to pass info from
@@ -513,7 +519,8 @@ struct _reg_trie_data {
                                         for the node following a given word. */
     U16                    *nextword;       /* optional 1 indexed array to support linked list
                                         of duplicate wordnums */
-    U32             laststate;       /* Build only */
+    U32             statecount;      /* Build only - number of states in the states array 
+                                        (including the unused zero state) */
     U32             wordcount;       /* Build only */
 #ifdef DEBUGGING
     STRLEN          charcount;       /* Build only */