Patch for adding tmux implementation for get_fork_TTY to perl5db.pl #13602

p5pRT · 2014-02-27T00:09:06Z

Migrated from rt.perl.org#121333 (status was 'resolved')

Searchable as RT121333$

p5pRT · 2014-02-27T00:09:06Z

From @rjbs

I wanted to get this patch into RT so it's not just a message in my inbox.

I'd like to consider it for 5.21.

--
rjbs

p5pRT · 2014-02-27T00:09:06Z

From @rjbs

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Subject: Patch for adding tmux implementation for get_fork_TTY to perl5db.pl
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Hello everyone,

I've attached a patch that allows users to (more easily) debug forking
processes when using tmux. The implementation simply creates a split
window and associates it with the child process.

Thanks,
Rob Hoelz

--MP_/JXpXq80DMxq1ykK69Cqe8ud
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filename="0001-Implement-get_fork_TTY-for-tmux.patch"
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=46rom 2abf84b16931967f191aa62b981b7b782c32e9f5 Mon Sep 17 00:00:00 2001
From: Rob Hoelz rob@hoelz.ro
Date: Sun, 9 Jun 2013 21:25:09 +0200
Subject: [PATCH] Implement get_fork_TTY for tmux

lib/perl5db.pl | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)

diff --git a/lib/perl5db.pl b/lib/perl5db.pl
index 881a9ec..0fec3bf 100644
--- a/lib/perl5db.pl
+++ b/lib/perl5db.pl
@@ -1331,6 +1331,9 @@ if (not defined &get_fork_TTY) # only if no rou=
tine exists
{
*get_fork_TTY =3D &xterm_get_fork_TTY; # use the xterm version
}

elsif ( $ENV{TMUX} ) {

   *get_fork_TTY =3D \&tmux_get_fork_TTY;

}
elsif ( $^O eq 'os2' ) { # If this is OS/2,
*get_fork_TTY =3D &os2_get_fork_TTY; # use the OS/2 version
}
@@ -7065,6 +7068,45 @@ sub macosx_get_fork_TTY
return $tty;
}
=20
+=3Dhead3 C<tmux_get_fork_TTY>

+Creates a split window for subprocesses when a process running under the
+perl debugger in Tmux forks.
+
+=3Dcut
+
+sub tmux_get_fork_TTY {

return unless $ENV{TMUX};
my $pipe;
my $status =3D open $pipe, '-|', 'tmux', 'split-window',

   '-P', '-F', '#{pane_tty}', 'sleep 100000';

if ( !$status ) {
```
   return;
```
}
my $tty =3D <$pipe>;
close $pipe;
if ( $tty ) {
```
   chomp $tty;
```
```
   if ( !defined $term ) {
```
```
       require Term::ReadLine;
```
```
       if ( !$rl ) {
```

           $term =3D Term::ReadLine::Stub->new( 'perldb', $IN, $OUT );

```
       }
```
```
       else {
```

           $term =3D Term::ReadLine->new( 'perldb', $IN, $OUT );

```
       }
```
```
   }
```
}
return $tty;
+}

=3Dhead2 C<create_IN_OUT($flags)>
=20
Create a new pair of filehandles, pointing to a new TTY. If impossible,
--=20
1.8.3

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p5pRT · 2014-02-27T00:09:06Z

From @rjbs

Hello everyone,

I've attached a patch that allows users to (more easily) debug forking
processes when using tmux. The implementation simply creates a split
window and associates it with the child process.

Thanks,
Rob Hoelz

p5pRT · 2014-02-27T00:09:06Z

From @rjbs

0001-Implement-get_fork_TTY-for-tmux.patch

From 2abf84b16931967f191aa62b981b7b782c32e9f5 Mon Sep 17 00:00:00 2001
From: Rob Hoelz <rob@hoelz.ro>
Date: Sun, 9 Jun 2013 21:25:09 +0200
Subject: [PATCH] Implement get_fork_TTY for tmux

---
 lib/perl5db.pl | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/lib/perl5db.pl b/lib/perl5db.pl
index 881a9ec..0fec3bf 100644
--- a/lib/perl5db.pl
+++ b/lib/perl5db.pl
@@ -1331,6 +1331,9 @@ if (not defined &get_fork_TTY)       # only if no routine exists
     {
         *get_fork_TTY = \&xterm_get_fork_TTY;    # use the xterm version
     }
+    elsif ( $ENV{TMUX} ) {
+        *get_fork_TTY = \&tmux_get_fork_TTY;
+    }
     elsif ( $^O eq 'os2' ) {                     # If this is OS/2,
         *get_fork_TTY = \&os2_get_fork_TTY;      # use the OS/2 version
     }
@@ -7065,6 +7068,45 @@ sub macosx_get_fork_TTY
     return $tty;
 }
 
+=head3 C<tmux_get_fork_TTY>
+
+Creates a split window for subprocesses when a process running under the
+perl debugger in Tmux forks.
+
+=cut
+
+sub tmux_get_fork_TTY {
+    return unless $ENV{TMUX};
+
+    my $pipe;
+
+    my $status = open $pipe, '-|', 'tmux', 'split-window',
+        '-P', '-F', '#{pane_tty}', 'sleep 100000';
+
+    if ( !$status ) {
+        return;
+    }
+
+    my $tty = <$pipe>;
+    close $pipe;
+
+    if ( $tty ) {
+        chomp $tty;
+
+        if ( !defined $term ) {
+            require Term::ReadLine;
+            if ( !$rl ) {
+                $term = Term::ReadLine::Stub->new( 'perldb', $IN, $OUT );
+            }
+            else {
+                $term = Term::ReadLine->new( 'perldb', $IN, $OUT );
+            }
+        }
+    }
+
+    return $tty;
+}
+
 =head2 C<create_IN_OUT($flags)>
 
 Create a new pair of filehandles, pointing to a new TTY. If impossible,
-- 
1.8.3

p5pRT · 2014-06-04T01:27:25Z

From @tonycoz

On Wed Feb 26 16:09:06 2014, rjbs wrote:

I wanted to get this patch into RT so it's not just a message in my inbox.

I'd like to consider it for 5.21.

Thanks, applied as babb663 (on the 28th).

Tony

p5pRT · 2014-06-04T01:27:25Z

The RT System itself - Status changed from 'new' to 'open'

p5pRT · 2014-06-04T01:27:26Z

@tonycoz - Status changed from 'open' to 'resolved'

p5pRT closed this as completed Jun 4, 2014

p5pRT added the Severity Low label Oct 19, 2019

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Patch for adding tmux implementation for get_fork_TTY to perl5db.pl #13602

Patch for adding tmux implementation for get_fork_TTY to perl5db.pl #13602

p5pRT commented Feb 27, 2014

p5pRT commented Feb 27, 2014

p5pRT commented Feb 27, 2014

p5pRT commented Feb 27, 2014

p5pRT commented Feb 27, 2014

p5pRT commented Jun 4, 2014

p5pRT commented Jun 4, 2014

p5pRT commented Jun 4, 2014

Patch for adding tmux implementation for get_fork_TTY to perl5db.pl #13602

Patch for adding tmux implementation for get_fork_TTY to perl5db.pl #13602

Comments

p5pRT commented Feb 27, 2014

p5pRT commented Feb 27, 2014

From @rjbs

p5pRT commented Feb 27, 2014

From @rjbs

p5pRT commented Feb 27, 2014

From @rjbs

p5pRT commented Feb 27, 2014

From @rjbs

p5pRT commented Jun 4, 2014

From @tonycoz

p5pRT commented Jun 4, 2014

p5pRT commented Jun 4, 2014