diff -r 5ff1fc726848 -r c6bca38c1cbf eggs/mercurial-1.7.3-py2.6-linux-x86_64.egg/hgext/pager.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eggs/mercurial-1.7.3-py2.6-linux-x86_64.egg/hgext/pager.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,113 @@
+# pager.py - display output using a pager
+#
+# Copyright 2008 David Soria Parra <dsp@php.net>
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2 or any later version.
+#
+# To load the extension, add it to your configuration file:
+#
+#   [extension]
+#   pager =
+#
+# Run "hg help pager" to get info on configuration.
+
+'''browse command output with an external pager
+
+To set the pager that should be used, set the application variable::
+
+  [pager]
+  pager = less -FRSX
+
+If no pager is set, the pager extensions uses the environment variable
+$PAGER. If neither pager.pager, nor $PAGER is set, no pager is used.
+
+If you notice "BROKEN PIPE" error messages, you can disable them by
+setting::
+
+  [pager]
+  quiet = True
+
+You can disable the pager for certain commands by adding them to the
+pager.ignore list::
+
+  [pager]
+  ignore = version, help, update
+
+You can also enable the pager only for certain commands using
+pager.attend. Below is the default list of commands to be paged::
+
+  [pager]
+  attend = annotate, cat, diff, export, glog, log, qdiff
+
+Setting pager.attend to an empty value will cause all commands to be
+paged.
+
+If pager.attend is present, pager.ignore will be ignored.
+
+To ignore global commands like :hg:`version` or :hg:`help`, you have
+to specify them in your user configuration file.
+
+The --pager=... option can also be used to control when the pager is
+used. Use a boolean value like yes, no, on, off, or use auto for
+normal behavior.
+'''
+
+import sys, os, signal, shlex, errno
+from mercurial import commands, dispatch, util, extensions
+from mercurial.i18n import _
+
+def _runpager(p):
+    if not hasattr(os, 'fork'):
+        sys.stderr = sys.stdout = util.popen(p, 'wb')
+        return
+    fdin, fdout = os.pipe()
+    pid = os.fork()
+    if pid == 0:
+        os.close(fdin)
+        os.dup2(fdout, sys.stdout.fileno())
+        os.dup2(fdout, sys.stderr.fileno())
+        os.close(fdout)
+        return
+    os.dup2(fdin, sys.stdin.fileno())
+    os.close(fdin)
+    os.close(fdout)
+    try:
+        os.execvp('/bin/sh', ['/bin/sh', '-c', p])
+    except OSError, e:
+        if e.errno == errno.ENOENT:
+            # no /bin/sh, try executing the pager directly
+            args = shlex.split(p)
+            os.execvp(args[0], args)
+        else:
+            raise
+
+def uisetup(ui):
+    if ui.plain():
+        return
+
+    def pagecmd(orig, ui, options, cmd, cmdfunc):
+        p = ui.config("pager", "pager", os.environ.get("PAGER"))
+        if p and sys.stdout.isatty() and '--debugger' not in sys.argv:
+            attend = ui.configlist('pager', 'attend', attended)
+            auto = options['pager'] == 'auto'
+            always = util.parsebool(options['pager'])
+            if (always or auto and
+                (cmd in attend or
+                 (cmd not in ui.configlist('pager', 'ignore') and not attend))):
+                ui.setconfig('ui', 'formatted', ui.formatted())
+                ui.setconfig('ui', 'interactive', False)
+                _runpager(p)
+                if ui.configbool('pager', 'quiet'):
+                    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
+        return orig(ui, options, cmd, cmdfunc)
+
+    extensions.wrapfunction(dispatch, '_runcommand', pagecmd)
+
+def extsetup(ui):
+    commands.globalopts.append(
+        ('', 'pager', 'auto',
+         _("when to paginate (boolean, always, auto, or never)"),
+         _('TYPE')))
+
+attended = ['annotate', 'cat', 'diff', 'export', 'glog', 'log', 'qdiff']