perl 2.0 (no announcement message available)perl-2.0

Some of the enhancements from Perl1 included:

    * New regexp routines derived from Henry Spencer's.
          o Support for /(foo|bar)/.
          o Support for /(foo)*/ and /(foo)+/.
          o \s for whitespace, \S for non-, \d for digit, \D nondigit 
    * Local variables in blocks, subroutines and evals.
    * Recursive subroutine calls are now supported.
    * Array values may now be interpolated into lists: unlink 'foo', 'bar', @trashcan, 'tmp';
    * File globbing.
    * Use of <> in array contexts returns the whole file or glob list.
    * New iterator for normal arrays, foreach, that allows both read and write.
    * Ability to open pipe to a forked off script for secure pipes in setuid scripts.
    * File inclusion via do 'foo.pl';
    * More file tests, including -t to see if, for instance, stdin is a terminal. File tests now behave in a more correct manner. You can do file tests on filehandles as well as filenames. The special filetests -T and -B test a file to see if it's text or binary.
    * An eof can now be used on each file of the <> input for such purposes as resetting the line numbers or appending to each file of an inplace edit.
    * Assignments can now function as lvalues, so you can say things like ($HOST = $host) =~ tr/a-z/A-Z/; ($obj = $src) =~ s/\.c$/.o/;
    * You can now do certain file operations with a variable which holds the name of a filehandle, e.g. open(++$incl,$includefilename); $foo = <$incl>;
    * Warnings are now available (with -w) on use of uninitialized variables and on identifiers that are mentioned only once, and on reference to various undefined things.
    * There is now a wait operator.
    * There is now a sort operator.
    * The manual is now not lying when it says that perl is generally faster than sed. I hope.

1 files changed, 14 insertions, 6 deletions

diff --git a/stab.h b/stab.h
index cd38d6d990..79126126eb 100644
--- a/stab.h
+++ b/stab.h
@@ -1,8 +1,8 @@
-/* $Header: stab.h,v 1.0 87/12/18 13:06:18 root Exp $
+/* $Header: stab.h,v 2.0 88/06/05 00:11:05 root Exp $
  *
  * $Log:	stab.h,v $
- * Revision 1.0  87/12/18  13:06:18  root
- * Initial revision
+ * Revision 2.0  88/06/05  00:11:05  root
+ * Baseline version 2.0.
  * 
  */
 
@@ -14,11 +14,12 @@ struct stab {
     FCMD	*stab_form;
     ARRAY	*stab_array;
     HASH	*stab_hash;
-    CMD		*stab_sub;
+    SUBR	*stab_sub;
     char	stab_flags;
 };
 
 #define SF_VMAGIC 1		/* call routine to dereference STR val */
+#define SF_MULTI 2		/* seen more than once */
 
 struct stio {
     FILE	*fp;
@@ -30,6 +31,7 @@ struct stio {
     STAB	*top_stab;
     char	*fmt_name;
     STAB	*fmt_stab;
+    short	subprocess;
     char	type;
     char	flags;
 };
@@ -38,6 +40,13 @@ struct stio {
 #define IOF_START 2	/* check for null ARGV and substitute '-' */
 #define IOF_FLUSH 4	/* this fp wants a flush after write op */
 
+struct sub {
+    CMD		*cmd;
+    char	*filename;
+    long	depth;	/* >= 2 indicates recursive call */
+    ARRAY	*tosave;
+};
+
 #define Nullstab Null(STAB*)
 
 #define STAB_STR(s) (tmpstab = (s), tmpstab->stab_flags & SF_VMAGIC ? stab_str(tmpstab) : tmpstab->stab_val)
@@ -51,8 +60,7 @@ EXT STAB *stab_index[128];
 EXT char *envname;	/* place for ENV name being assigned--gross cheat */
 EXT char *signame;	/* place for SIG name being assigned--gross cheat */
 
-EXT int statusvalue;
-EXT int subsvalue;
+EXT unsigned short statusvalue;
 
 STAB *aadd();
 STAB *hadd();