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, 69 insertions, 0 deletions

diff --git a/t/op.study b/t/op.study
new file mode 100644
index 0000000000..8da28d6575
--- /dev/null
+++ b/t/op.study
@@ -0,0 +1,69 @@
+#!./perl
+
+# $Header: op.study,v 2.0 88/06/05 00:14:45 root Exp $
+
+print "1..24\n";
+
+$x = "abc\ndef\n";
+study($x);
+
+if ($x =~ /^abc/) {print "ok 1\n";} else {print "not ok 1\n";}
+if ($x !~ /^def/) {print "ok 2\n";} else {print "not ok 2\n";}
+
+$* = 1;
+if ($x =~ /^def/) {print "ok 3\n";} else {print "not ok 3\n";}
+$* = 0;
+
+$_ = '123';
+study;
+if (/^([0-9][0-9]*)/) {print "ok 4\n";} else {print "not ok 4\n";}
+
+if ($x =~ /^xxx/) {print "not ok 5\n";} else {print "ok 5\n";}
+if ($x !~ /^abc/) {print "not ok 6\n";} else {print "ok 6\n";}
+
+if ($x =~ /def/) {print "ok 7\n";} else {print "not ok 7\n";}
+if ($x !~ /def/) {print "not ok 8\n";} else {print "ok 8\n";}
+
+study($x);
+if ($x !~ /.def/) {print "ok 9\n";} else {print "not ok 9\n";}
+if ($x =~ /.def/) {print "not ok 10\n";} else {print "ok 10\n";}
+
+if ($x =~ /\ndef/) {print "ok 11\n";} else {print "not ok 11\n";}
+if ($x !~ /\ndef/) {print "not ok 12\n";} else {print "ok 12\n";}
+
+$_ = 'aaabbbccc';
+study;
+if (/(a*b*)(c*)/ && $1 eq 'aaabbb' && $2 eq 'ccc') {
+	print "ok 13\n";
+} else {
+	print "not ok 13\n";
+}
+if (/(a+b+c+)/ && $1 eq 'aaabbbccc') {
+	print "ok 14\n";
+} else {
+	print "not ok 14\n";
+}
+
+if (/a+b?c+/) {print "not ok 15\n";} else {print "ok 15\n";}
+
+$_ = 'aaabccc';
+study;
+if (/a+b?c+/) {print "ok 16\n";} else {print "not ok 16\n";}
+if (/a*b+c*/) {print "ok 17\n";} else {print "not ok 17\n";}
+
+$_ = 'aaaccc';
+study;
+if (/a*b?c*/) {print "ok 18\n";} else {print "not ok 18\n";}
+if (/a*b+c*/) {print "not ok 19\n";} else {print "ok 19\n";}
+
+$_ = 'abcdef';
+study;
+if (/bcd|xyz/) {print "ok 20\n";} else {print "not ok 20\n";}
+if (/xyz|bcd/) {print "ok 21\n";} else {print "not ok 21\n";}
+
+if (m|bc/*d|) {print "ok 22\n";} else {print "not ok 22\n";}
+
+if (/^$_$/) {print "ok 23\n";} else {print "not ok 23\n";}
+
+$* = 1;		# test 3 only tested the optimized version--this one is for real
+if ("ab\ncd\n" =~ /^cd/) {print "ok 24\n";} else {print "not ok 24\n";}