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authorJarkko Hietaniemi <jhi@iki.fi>2001-10-02 23:24:07 +0000
committerJarkko Hietaniemi <jhi@iki.fi>2001-10-02 23:24:07 +0000
commit55e174a45bd47ea4ed5387b76c84171dbbdf6147 (patch)
treea49f1aa1f67fbf3df8336102aeb4fbde13e5e445 /pod/perlfaq3.pod
parentf173cd4968fd461b0b3add4db940bc4374069991 (diff)
downloadperl-55e174a45bd47ea4ed5387b76c84171dbbdf6147.tar.gz
FAQ sync.
p4raw-id: //depot/perl@12311
Diffstat (limited to 'pod/perlfaq3.pod')
-rw-r--r--pod/perlfaq3.pod53
1 files changed, 33 insertions, 20 deletions
diff --git a/pod/perlfaq3.pod b/pod/perlfaq3.pod
index 9979ab9e7c..efa764df60 100644
--- a/pod/perlfaq3.pod
+++ b/pod/perlfaq3.pod
@@ -1,6 +1,6 @@
=head1 NAME
-perlfaq3 - Programming Tools ($Revision: 1.2 $, $Date: 2001/09/29 03:13:13 $)
+perlfaq3 - Programming Tools ($Revision: 1.4 $, $Date: 2001/10/02 19:42:02 $)
=head1 DESCRIPTION
@@ -41,10 +41,22 @@ operations typically found in symbolic debuggers.
=head2 Is there a Perl shell?
-In general, no. The Shell.pm module (distributed with Perl) makes
-Perl try commands which aren't part of the Perl language as shell
-commands. perlsh from the source distribution is simplistic and
-uninteresting, but may still be what you want.
+In general, not yet. There is psh available at
+
+ http://www.focusresearch.com/gregor/psh
+
+Which includes the following description:
+
+ The Perl Shell is a shell that combines the interactive nature
+ of a Unix shell with the power of Perl. The goal is to eventually
+ have a full featured shell that behaves as expected for normal
+ shell activity. But, the Perl Shell will use Perl syntax and
+ functionality for for control-flow statements and other things.
+
+The Shell.pm module (distributed with Perl) makes Perl try commands
+which aren't part of the Perl language as shell commands. perlsh
+from the source distribution is simplistic and uninteresting, but
+may still be what you want.
=head2 How do I debug my Perl programs?
@@ -118,27 +130,28 @@ to generate cross-reference reports for Perl programs.
=head2 Is there a pretty-printer (formatter) for Perl?
-There is no program that will reformat Perl as much as indent(1) does
-for C. The complex feedback between the scanner and the parser (this
-feedback is what confuses the vgrind and emacs programs) makes it
-challenging at best to write a stand-alone Perl parser.
-
-Of course, if you simply follow the guidelines in L<perlstyle>, you
-shouldn't need to reformat. The habit of formatting your code as you
-write it will help prevent bugs. Your editor can and should help you
-with this. The perl-mode or newer cperl-mode for emacs can provide
-remarkable amounts of help with most (but not all) code, and even less
-programmable editors can provide significant assistance. Tom swears
-by the following settings in vi and its clones:
+Perltidy is a Perl script which indents and reformats Perl scripts
+to make them easier to read by trying to follow the rules of the
+L<perlstyle>. If you write Perl scripts, or spend much time reading
+them, you will probably find it useful. It is available at
+http://perltidy.sourceforge.net
+
+Of course, if you simply follow the guidelines in L<perlstyle>,
+you shouldn't need to reformat. The habit of formatting your code
+as you write it will help prevent bugs. Your editor can and should
+help you with this. The perl-mode or newer cperl-mode for emacs
+can provide remarkable amounts of help with most (but not all)
+code, and even less programmable editors can provide significant
+assistance. Tom Christiansen and many other VI users swear by
+the following settings in vi and its clones:
set ai sw=4
map! ^O {^M}^[O^T
-Now put that in your F<.exrc> file (replacing the caret characters
+Put that in your F<.exrc> file (replacing the caret characters
with control characters) and away you go. In insert mode, ^T is
for indenting, ^D is for undenting, and ^O is for blockdenting--
-as it were. If you haven't used the last one, you're missing
-a lot. A more complete example, with comments, can be found at
+as it were. A more complete example, with comments, can be found at
http://www.perl.com/CPAN-local/authors/id/TOMC/scripts/toms.exrc.gz
If you are used to using the I<vgrind> program for printing out nice code