# HG changeset patch
# User mpm@selenic.com
# Date 1127170757 25200
# Node ID 6a0d373d3126620f984b10d4b5d599cee5c5cab0
# Parent  0bf11906df28adb3bdc700cf2f1ff81580ae1b2b
hgit -> hgk.py

Move hgit to hgk.py
- importing hgit as an extension created compiled hgitc, which was confusing
- hgit existed to support hgk so it was slightly misnamed
- removed executable bit as we no longer run it directly
- add 'view' command so we can run hg view
- change git-* commands to debug-* so hg help won't show them
- chdir to repository root on view so hgk doesn't choke in subdirs



diff -r 0bf11906df28 -r 6a0d373d3126 contrib/hgit
--- a/contrib/hgit	Mon Sep 19 22:15:36 2005 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,335 +0,0 @@
-#!/usr/bin/env python
-#
-# Minimal support for git commands on an hg repository
-#
-# Copyright 2005 Chris Mason <mason@suse.com>
-#
-# This software may be used and distributed according to the terms
-# of the GNU General Public License, incorporated herein by reference.
-
-import time, sys, signal
-from mercurial import hg, mdiff, fancyopts, commands, ui, util
-
-def dodiff(fp, ui, repo, node1, node2, files=None, match=util.always,
-           changes=None, text=False):
-    def date(c):
-        return time.asctime(time.gmtime(float(c[2].split(' ')[0])))
-
-    if not changes:
-        (c, a, d, u) = repo.changes(node1, node2, files, match=match)
-    else:
-        (c, a, d, u) = changes
-    if files:
-        c, a, d = map(lambda x: filterfiles(files, x), (c, a, d))
-
-    if not c and not a and not d:
-        return
-
-    if node2:
-        change = repo.changelog.read(node2)
-        mmap2 = repo.manifest.read(change[0])
-        date2 = date(change)
-        def read(f):
-            return repo.file(f).read(mmap2[f])
-    else:
-        date2 = time.asctime()
-        if not node1:
-            node1 = repo.dirstate.parents()[0]
-        def read(f):
-            return repo.wfile(f).read()
-
-    change = repo.changelog.read(node1)
-    mmap = repo.manifest.read(change[0])
-    date1 = date(change)
-
-    for f in c:
-        to = None
-        if f in mmap:
-            to = repo.file(f).read(mmap[f])
-        tn = read(f)
-        fp.write("diff --git a/%s b/%s\n" % (f, f))
-        fp.write(mdiff.unidiff(to, date1, tn, date2, f, None, text=text))
-    for f in a:
-        to = None
-        tn = read(f)
-        fp.write("diff --git /dev/null b/%s\n" % (f))
-        fp.write(mdiff.unidiff(to, date1, tn, date2, f, None, text=text))
-    for f in d:
-        to = repo.file(f).read(mmap[f])
-        tn = None
-        fp.write("diff --git a/%s /dev/null\n" % (f))
-        fp.write(mdiff.unidiff(to, date1, tn, date2, f, None, text=text))
-
-def difftree(ui, repo, node1=None, node2=None, **opts):
-    """diff trees from two commits"""
-    def __difftree(repo, node1, node2):
-        def date(c):
-            return time.asctime(time.gmtime(float(c[2].split(' ')[0])))
-
-        if node2:
-            change = repo.changelog.read(node2)
-            mmap2 = repo.manifest.read(change[0])
-            (c, a, d, u) = repo.changes(node1, node2)
-            def read(f): return repo.file(f).read(mmap2[f])
-            date2 = date(change)
-        else:
-            date2 = time.asctime()
-            (c, a, d, u) = repo.changes(node1, None)
-            if not node1:
-                node1 = repo.dirstate.parents()[0]
-            def read(f): return file(os.path.join(repo.root, f)).read()
-
-        change = repo.changelog.read(node1)
-        mmap = repo.manifest.read(change[0])
-        date1 = date(change)
-        empty = "0" * 40;
-
-        for f in c:
-            # TODO get file permissions
-            print ":100664 100664 %s %s M\t%s\t%s" % (hg.hex(mmap[f]), 
-                                                      hg.hex(mmap2[f]), f, f)
-        for f in a:
-            print ":000000 100664 %s %s N\t%s\t%s" % (empty, hg.hex(mmap2[f]), f, f)
-        for f in d:
-            print ":100664 000000 %s %s D\t%s\t%s" % (hg.hex(mmap[f]), empty, f, f)
-    ##
-
-    while True:
-        if opts['stdin']:
-            try:
-                line = raw_input().split(' ')
-                node1 = line[0]
-                if len(line) > 1:
-                    node2 = line[1]
-                else:
-                    node2 = None
-            except EOFError:
-                break
-        node1 = repo.lookup(node1)
-        if node2:
-            node2 = repo.lookup(node2)
-        else:
-            node2 = node1
-            node1 = repo.changelog.parents(node1)[0]
-        if opts['patch']:
-            if opts['pretty']:
-                catcommit(repo, node2, "")
-            dodiff(sys.stdout, ui, repo, node1, node2)
-        else:
-            __difftree(repo, node1, node2)
-        if not opts['stdin']:
-            break
-
-def catcommit(repo, n, prefix, changes=None):
-    nlprefix = '\n' + prefix;
-    (p1, p2) = repo.changelog.parents(n)
-    (h, h1, h2) = map(hg.hex, (n, p1, p2))
-    (i1, i2) = map(repo.changelog.rev, (p1, p2))
-    if not changes:
-        changes = repo.changelog.read(n)
-    print "tree %s" % (hg.hex(changes[0]))
-    if i1 != -1: print "parent %s" % (h1)
-    if i2 != -1: print "parent %s" % (h2)
-    date_ar = changes[2].split(' ')
-    date = int(float(date_ar[0]))
-    lines = changes[4].splitlines()
-    if lines[-1].startswith('committer:'):
-        committer = lines[-1].split(': ')[1].rstrip()
-    else:
-        committer = "%s %s %s" % (changes[1], date, date_ar[1])
-        
-    print "author %s %s %s" % (changes[1], date, date_ar[1])
-    print "committer %s" % (committer)
-    print ""
-    if prefix != "":
-        print "%s%s" % (prefix, changes[4].replace('\n', nlprefix).strip())
-    else:
-        print changes[4]
-    if prefix:
-        sys.stdout.write('\0')
-
-def base(ui, repo, node1, node2):
-    """Output common ancestor information"""
-    node1 = repo.lookup(node1)
-    node2 = repo.lookup(node2)
-    n = repo.changelog.ancestor(node1, node2)
-    print hg.hex(n)
-
-def catfile(ui, repo, type=None, r=None, **opts):
-    """cat a specific revision"""
-    # in stdin mode, every line except the commit is prefixed with two
-    # spaces.  This way the our caller can find the commit without magic
-    # strings
-    #
-    prefix = ""
-    if opts['stdin']:
-        try:
-            (type, r) = raw_input().split(' ');
-            prefix = "    "
-        except EOFError:
-            return
-
-    else:
-        if not type or not r:
-            ui.warn("cat-file: type or revision not supplied\n")
-            commands.help_(ui, 'cat-file')
-
-    while r:
-        if type != "commit":
-            sys.stderr.write("aborting hg cat-file only understands commits\n")
-            sys.exit(1);
-        n = repo.lookup(r)
-        catcommit(repo, n, prefix)
-        if opts['stdin']:
-            try:
-                (type, r) = raw_input().split(' ');
-            except EOFError:
-                break
-        else:
-            break
-
-# git rev-tree is a confusing thing.  You can supply a number of
-# commit sha1s on the command line, and it walks the commit history
-# telling you which commits are reachable from the supplied ones via
-# a bitmask based on arg position.
-# you can specify a commit to stop at by starting the sha1 with ^
-def revtree(args, repo, full="tree", maxnr=0, parents=False):
-    def chlogwalk():
-        ch = repo.changelog
-        count = ch.count()
-        i = count
-        l = [0] * 100
-        chunk = 100
-        while True:
-            if chunk > i:
-                chunk = i
-                i = 0
-            else:
-                i -= chunk
-
-            for x in xrange(0, chunk):
-                if i + x >= count:
-                    l[chunk - x:] = [0] * (chunk - x)
-                    break
-                if full != None:
-                    l[x] = ch.read(ch.node(i + x))
-                else:
-                    l[x] = 1
-            for x in xrange(chunk-1, -1, -1):
-                if l[x] != 0:
-                    yield (i + x, full != None and l[x] or None)
-            if i == 0:
-                break
-            
-    # calculate and return the reachability bitmask for sha
-    def is_reachable(ar, reachable, sha):
-        if len(ar) == 0:
-            return 1
-        mask = 0
-        for i in range(len(ar)):
-            if sha in reachable[i]:
-                mask |= 1 << i
-
-        return mask
-
-    reachable = []
-    stop_sha1 = []
-    want_sha1 = []
-    count = 0
-
-    # figure out which commits they are asking for and which ones they
-    # want us to stop on
-    for i in range(len(args)):
-        if args[i].startswith('^'):
-            s = repo.lookup(args[i][1:])
-            stop_sha1.append(s)
-            want_sha1.append(s)
-        elif args[i] != 'HEAD':
-            want_sha1.append(repo.lookup(args[i]))
-
-    # calculate the graph for the supplied commits
-    for i in range(len(want_sha1)):
-        reachable.append({});
-        n = want_sha1[i];
-        visit = [n];
-        reachable[i][n] = 1
-        while visit:
-            n = visit.pop(0)
-            if n in stop_sha1:
-                continue
-            for p in repo.changelog.parents(n):
-                if p not in reachable[i]:
-                    reachable[i][p] = 1
-                    visit.append(p)
-                if p in stop_sha1:
-                    continue
-
-    # walk the repository looking for commits that are in our
-    # reachability graph
-    #for i in range(repo.changelog.count()-1, -1, -1):
-    for i, changes in chlogwalk():
-        n = repo.changelog.node(i)
-        mask = is_reachable(want_sha1, reachable, n)
-        if mask:
-            parentstr = ""
-            if parents:
-                pp = repo.changelog.parents(n)
-                if pp[0] != hg.nullid:
-                    parentstr += " " + hg.hex(pp[0])
-                if pp[1] != hg.nullid:
-                    parentstr += " " + hg.hex(pp[1])
-            if not full:
-                print hg.hex(n) + parentstr
-            elif full is "commit":
-                print hg.hex(n) + parentstr
-                catcommit(repo, n, '    ', changes)
-            else:
-                (p1, p2) = repo.changelog.parents(n)
-                (h, h1, h2) = map(hg.hex, (n, p1, p2))
-                (i1, i2) = map(repo.changelog.rev, (p1, p2))
-
-                date = changes[2].split(' ')[0]
-                print "%s %s:%s" % (date, h, mask),
-                mask = is_reachable(want_sha1, reachable, p1)
-                if i1 != -1 and mask > 0:
-                    print "%s:%s " % (h1, mask),
-                mask = is_reachable(want_sha1, reachable, p2)
-                if i2 != -1 and mask > 0:
-                    print "%s:%s " % (h2, mask),
-                print ""
-            if maxnr and count >= maxnr:
-                break
-            count += 1
-
-# git rev-list tries to order things by date, and has the ability to stop
-# at a given commit without walking the whole repo.  TODO add the stop
-# parameter
-def revlist(ui, repo, *revs, **opts):
-    """print revisions"""
-    if opts['header']:
-        full = "commit"
-    else:
-        full = None
-    copy = [x for x in revs]
-    revtree(copy, repo, full, opts['max_count'], opts['parents'])
-
-cmdtable = {
-    "git-diff-tree": (difftree, [('p', 'patch', None, 'generate patch'),
-                            ('r', 'recursive', None, 'recursive'),
-                            ('P', 'pretty', None, 'pretty'),
-                            ('s', 'stdin', None, 'stdin'),
-                            ('C', 'copy', None, 'detect copies'),
-                            ('S', 'search', "", 'search')],
-                            "hg git-diff-tree [options] node1 node2"),
-    "git-cat-file": (catfile, [('s', 'stdin', None, 'stdin')],
-                 "hg cat-file [options] type file"),
-    "git-merge-base": (base, [], "hg git-merge-base node node"),
-    "git-rev-list": (revlist, [('H', 'header', None, 'header'),
-                           ('t', 'topo-order', None, 'topo-order'),
-                           ('p', 'parents', None, 'parents'),
-                           ('n', 'max-count', 0, 'max-count')],
-                 "hg git-rev-list [options] revs"),
-}
-
-def reposetup(ui, repo):
-    pass
diff -r 0bf11906df28 -r 6a0d373d3126 contrib/hgk
--- a/contrib/hgk	Mon Sep 19 22:15:36 2005 +0200
+++ b/contrib/hgk	Mon Sep 19 15:59:17 2005 -0700
@@ -34,7 +34,7 @@
     set ncmupdate 1
     if [catch {
 	set parse_args [concat --default HEAD $rargs]
-	set parsed_args [split [eval exec hg git-rev-parse $parse_args] "\n"]
+	set parsed_args [split [eval exec hg debug-rev-parse $parse_args] "\n"]
     }] {
 	# if git-rev-parse failed for some reason...
 	if {$rargs == {}} {
@@ -43,9 +43,9 @@
 	set parsed_args $rargs
     }
     if [catch {
-	set commfd [open "|hg git-rev-list --header --topo-order --parents $parsed_args" r]
+	set commfd [open "|hg debug-rev-list --header --topo-order --parents $parsed_args" r]
     } err] {
-	puts stderr "Error executing hg git-rev-list: $err"
+	puts stderr "Error executing hg debug-rev-list: $err"
 	exit 1
     }
     set leftover {}
@@ -113,7 +113,7 @@
 	    if {[string length $shortcmit] > 80} {
 		set shortcmit "[string range $shortcmit 0 80]..."
 	    }
-	    error_popup "Can't parse hg git-rev-list output: {$shortcmit}"
+	    error_popup "Can't parse hg debug-rev-list output: {$shortcmit}"
 	    exit 1
 	}
 	set id [lindex $ids 0]
@@ -164,7 +164,7 @@
 }
 
 proc readcommit {id} {
-    if [catch {set contents [exec hg git-cat-file commit $id]}] return
+    if [catch {set contents [exec hg debug-cat-file commit $id]}] return
     parsecommit $id $contents 0 {}
 }
 
@@ -1708,7 +1708,7 @@
     }
 
     if {[catch {
-	set f [open [list | hg git-diff-tree --stdin -s -r -S$findstring \
+	set f [open [list | hg debug-diff-tree --stdin -s -r -S$findstring \
 			 << $inputids] r]
     } err]} {
 	error_popup "Error starting search process: $err"
@@ -1811,7 +1811,7 @@
     # start off a git-diff-tree process if needed
     if {$diffsneeded ne {}} {
 	if {[catch {
-	    set df [open [list | hg git-diff-tree -r --stdin << $diffsneeded] r]
+	    set df [open [list | hg debug-diff-tree -r --stdin << $diffsneeded] r]
 	} err ]} {
 	    error_popup "Error starting search process: $err"
 	    return
@@ -1843,7 +1843,7 @@
 	    if {[catch {close $df} err]} {
 		stopfindproc
 		bell
-		error_popup "Error in hg git-diff-tree: $err"
+		error_popup "Error in hg debug-diff-tree: $err"
 	    } elseif {[info exists findids]} {
 		set ids $findids
 		stopfindproc
@@ -2232,7 +2232,7 @@
 	    set gca $id
 	} else {
 	    if {[catch {
-		set gca [exec hg git-merge-base $gca $id]
+		set gca [exec hg debug-merge-base $gca $id]
 	    } err]} {
 		return {}
 	    }
@@ -2320,7 +2320,7 @@
     catch {unset grouphunks}
     set groupfilelast -1
     foreach p $parents($diffmergeid) {
-	set cmd [list | hg git-diff-tree -p $p $diffmergeid]
+	set cmd [list | hg debug-diff-tree -p $p $diffmergeid]
 	set cmd [concat $cmd $mergefilelist($diffmergeid)]
 	if {[catch {set f [open $cmd r]} err]} {
 	    error_popup "Error getting diffs: $err"
@@ -2764,7 +2764,7 @@
     set treediff {}
     set id [lindex $ids 0]
     set p [lindex $ids 1]
-    if [catch {set gdtf [open "|hg git-diff-tree -r $p $id" r]}] return
+    if [catch {set gdtf [open "|hg debug-diff-tree -r $p $id" r]}] return
     fconfigure $gdtf -blocking 0
     fileevent $gdtf readable [list gettreediffline $gdtf $ids]
 }
@@ -2800,7 +2800,7 @@
     set id [lindex $ids 0]
     set p [lindex $ids 1]
     set env(GIT_DIFF_OPTS) $diffopts
-    set cmd [list | hg git-diff-tree -r -p -C $p $id]
+    set cmd [list | hg debug-diff-tree -r -p -C $p $id]
     if {[catch {set bdf [open $cmd r]} err]} {
 	puts "error getting diffs: $err"
 	return
@@ -3387,7 +3387,7 @@
     set oldid [$patchtop.fromsha1 get]
     set newid [$patchtop.tosha1 get]
     set fname [$patchtop.fname get]
-    if {[catch {exec hg git-diff-tree -p $oldid $newid >$fname &} err]} {
+    if {[catch {exec hg debug-diff-tree -p $oldid $newid >$fname &} err]} {
 	error_popup "Error creating patch: $err"
     }
     catch {destroy $patchtop}
@@ -3608,7 +3608,7 @@
 set datemode 0
 set boldnames 0
 set diffopts "-U 5 -p"
-set wrcomcmd "hg git-diff-tree --stdin -p --pretty"
+set wrcomcmd "hg debug-diff-tree --stdin -p --pretty"
 
 set mainfont {Helvetica 9}
 set textfont {Courier 9}
diff -r 0bf11906df28 -r 6a0d373d3126 contrib/hgk.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contrib/hgk.py	Mon Sep 19 15:59:17 2005 -0700
@@ -0,0 +1,341 @@
+#!/usr/bin/env python
+#
+# Minimal support for git commands on an hg repository
+#
+# Copyright 2005 Chris Mason <mason@suse.com>
+#
+# This software may be used and distributed according to the terms
+# of the GNU General Public License, incorporated herein by reference.
+
+import time, sys, signal, os
+from mercurial import hg, mdiff, fancyopts, commands, ui, util
+
+def dodiff(fp, ui, repo, node1, node2, files=None, match=util.always,
+           changes=None, text=False):
+    def date(c):
+        return time.asctime(time.gmtime(float(c[2].split(' ')[0])))
+
+    if not changes:
+        (c, a, d, u) = repo.changes(node1, node2, files, match=match)
+    else:
+        (c, a, d, u) = changes
+    if files:
+        c, a, d = map(lambda x: filterfiles(files, x), (c, a, d))
+
+    if not c and not a and not d:
+        return
+
+    if node2:
+        change = repo.changelog.read(node2)
+        mmap2 = repo.manifest.read(change[0])
+        date2 = date(change)
+        def read(f):
+            return repo.file(f).read(mmap2[f])
+    else:
+        date2 = time.asctime()
+        if not node1:
+            node1 = repo.dirstate.parents()[0]
+        def read(f):
+            return repo.wfile(f).read()
+
+    change = repo.changelog.read(node1)
+    mmap = repo.manifest.read(change[0])
+    date1 = date(change)
+
+    for f in c:
+        to = None
+        if f in mmap:
+            to = repo.file(f).read(mmap[f])
+        tn = read(f)
+        fp.write("diff --git a/%s b/%s\n" % (f, f))
+        fp.write(mdiff.unidiff(to, date1, tn, date2, f, None, text=text))
+    for f in a:
+        to = None
+        tn = read(f)
+        fp.write("diff --git /dev/null b/%s\n" % (f))
+        fp.write(mdiff.unidiff(to, date1, tn, date2, f, None, text=text))
+    for f in d:
+        to = repo.file(f).read(mmap[f])
+        tn = None
+        fp.write("diff --git a/%s /dev/null\n" % (f))
+        fp.write(mdiff.unidiff(to, date1, tn, date2, f, None, text=text))
+
+def difftree(ui, repo, node1=None, node2=None, **opts):
+    """diff trees from two commits"""
+    def __difftree(repo, node1, node2):
+        def date(c):
+            return time.asctime(time.gmtime(float(c[2].split(' ')[0])))
+
+        if node2:
+            change = repo.changelog.read(node2)
+            mmap2 = repo.manifest.read(change[0])
+            (c, a, d, u) = repo.changes(node1, node2)
+            def read(f): return repo.file(f).read(mmap2[f])
+            date2 = date(change)
+        else:
+            date2 = time.asctime()
+            (c, a, d, u) = repo.changes(node1, None)
+            if not node1:
+                node1 = repo.dirstate.parents()[0]
+            def read(f): return file(os.path.join(repo.root, f)).read()
+
+        change = repo.changelog.read(node1)
+        mmap = repo.manifest.read(change[0])
+        date1 = date(change)
+        empty = "0" * 40;
+
+        for f in c:
+            # TODO get file permissions
+            print ":100664 100664 %s %s M\t%s\t%s" % (hg.hex(mmap[f]), 
+                                                      hg.hex(mmap2[f]), f, f)
+        for f in a:
+            print ":000000 100664 %s %s N\t%s\t%s" % (empty, hg.hex(mmap2[f]), f, f)
+        for f in d:
+            print ":100664 000000 %s %s D\t%s\t%s" % (hg.hex(mmap[f]), empty, f, f)
+    ##
+
+    while True:
+        if opts['stdin']:
+            try:
+                line = raw_input().split(' ')
+                node1 = line[0]
+                if len(line) > 1:
+                    node2 = line[1]
+                else:
+                    node2 = None
+            except EOFError:
+                break
+        node1 = repo.lookup(node1)
+        if node2:
+            node2 = repo.lookup(node2)
+        else:
+            node2 = node1
+            node1 = repo.changelog.parents(node1)[0]
+        if opts['patch']:
+            if opts['pretty']:
+                catcommit(repo, node2, "")
+            dodiff(sys.stdout, ui, repo, node1, node2)
+        else:
+            __difftree(repo, node1, node2)
+        if not opts['stdin']:
+            break
+
+def catcommit(repo, n, prefix, changes=None):
+    nlprefix = '\n' + prefix;
+    (p1, p2) = repo.changelog.parents(n)
+    (h, h1, h2) = map(hg.hex, (n, p1, p2))
+    (i1, i2) = map(repo.changelog.rev, (p1, p2))
+    if not changes:
+        changes = repo.changelog.read(n)
+    print "tree %s" % (hg.hex(changes[0]))
+    if i1 != -1: print "parent %s" % (h1)
+    if i2 != -1: print "parent %s" % (h2)
+    date_ar = changes[2].split(' ')
+    date = int(float(date_ar[0]))
+    lines = changes[4].splitlines()
+    if lines[-1].startswith('committer:'):
+        committer = lines[-1].split(': ')[1].rstrip()
+    else:
+        committer = "%s %s %s" % (changes[1], date, date_ar[1])
+        
+    print "author %s %s %s" % (changes[1], date, date_ar[1])
+    print "committer %s" % (committer)
+    print ""
+    if prefix != "":
+        print "%s%s" % (prefix, changes[4].replace('\n', nlprefix).strip())
+    else:
+        print changes[4]
+    if prefix:
+        sys.stdout.write('\0')
+
+def base(ui, repo, node1, node2):
+    """Output common ancestor information"""
+    node1 = repo.lookup(node1)
+    node2 = repo.lookup(node2)
+    n = repo.changelog.ancestor(node1, node2)
+    print hg.hex(n)
+
+def catfile(ui, repo, type=None, r=None, **opts):
+    """cat a specific revision"""
+    # in stdin mode, every line except the commit is prefixed with two
+    # spaces.  This way the our caller can find the commit without magic
+    # strings
+    #
+    prefix = ""
+    if opts['stdin']:
+        try:
+            (type, r) = raw_input().split(' ');
+            prefix = "    "
+        except EOFError:
+            return
+
+    else:
+        if not type or not r:
+            ui.warn("cat-file: type or revision not supplied\n")
+            commands.help_(ui, 'cat-file')
+
+    while r:
+        if type != "commit":
+            sys.stderr.write("aborting hg cat-file only understands commits\n")
+            sys.exit(1);
+        n = repo.lookup(r)
+        catcommit(repo, n, prefix)
+        if opts['stdin']:
+            try:
+                (type, r) = raw_input().split(' ');
+            except EOFError:
+                break
+        else:
+            break
+
+# git rev-tree is a confusing thing.  You can supply a number of
+# commit sha1s on the command line, and it walks the commit history
+# telling you which commits are reachable from the supplied ones via
+# a bitmask based on arg position.
+# you can specify a commit to stop at by starting the sha1 with ^
+def revtree(args, repo, full="tree", maxnr=0, parents=False):
+    def chlogwalk():
+        ch = repo.changelog
+        count = ch.count()
+        i = count
+        l = [0] * 100
+        chunk = 100
+        while True:
+            if chunk > i:
+                chunk = i
+                i = 0
+            else:
+                i -= chunk
+
+            for x in xrange(0, chunk):
+                if i + x >= count:
+                    l[chunk - x:] = [0] * (chunk - x)
+                    break
+                if full != None:
+                    l[x] = ch.read(ch.node(i + x))
+                else:
+                    l[x] = 1
+            for x in xrange(chunk-1, -1, -1):
+                if l[x] != 0:
+                    yield (i + x, full != None and l[x] or None)
+            if i == 0:
+                break
+            
+    # calculate and return the reachability bitmask for sha
+    def is_reachable(ar, reachable, sha):
+        if len(ar) == 0:
+            return 1
+        mask = 0
+        for i in range(len(ar)):
+            if sha in reachable[i]:
+                mask |= 1 << i
+
+        return mask
+
+    reachable = []
+    stop_sha1 = []
+    want_sha1 = []
+    count = 0
+
+    # figure out which commits they are asking for and which ones they
+    # want us to stop on
+    for i in range(len(args)):
+        if args[i].startswith('^'):
+            s = repo.lookup(args[i][1:])
+            stop_sha1.append(s)
+            want_sha1.append(s)
+        elif args[i] != 'HEAD':
+            want_sha1.append(repo.lookup(args[i]))
+
+    # calculate the graph for the supplied commits
+    for i in range(len(want_sha1)):
+        reachable.append({});
+        n = want_sha1[i];
+        visit = [n];
+        reachable[i][n] = 1
+        while visit:
+            n = visit.pop(0)
+            if n in stop_sha1:
+                continue
+            for p in repo.changelog.parents(n):
+                if p not in reachable[i]:
+                    reachable[i][p] = 1
+                    visit.append(p)
+                if p in stop_sha1:
+                    continue
+
+    # walk the repository looking for commits that are in our
+    # reachability graph
+    #for i in range(repo.changelog.count()-1, -1, -1):
+    for i, changes in chlogwalk():
+        n = repo.changelog.node(i)
+        mask = is_reachable(want_sha1, reachable, n)
+        if mask:
+            parentstr = ""
+            if parents:
+                pp = repo.changelog.parents(n)
+                if pp[0] != hg.nullid:
+                    parentstr += " " + hg.hex(pp[0])
+                if pp[1] != hg.nullid:
+                    parentstr += " " + hg.hex(pp[1])
+            if not full:
+                print hg.hex(n) + parentstr
+            elif full is "commit":
+                print hg.hex(n) + parentstr
+                catcommit(repo, n, '    ', changes)
+            else:
+                (p1, p2) = repo.changelog.parents(n)
+                (h, h1, h2) = map(hg.hex, (n, p1, p2))
+                (i1, i2) = map(repo.changelog.rev, (p1, p2))
+
+                date = changes[2].split(' ')[0]
+                print "%s %s:%s" % (date, h, mask),
+                mask = is_reachable(want_sha1, reachable, p1)
+                if i1 != -1 and mask > 0:
+                    print "%s:%s " % (h1, mask),
+                mask = is_reachable(want_sha1, reachable, p2)
+                if i2 != -1 and mask > 0:
+                    print "%s:%s " % (h2, mask),
+                print ""
+            if maxnr and count >= maxnr:
+                break
+            count += 1
+
+# git rev-list tries to order things by date, and has the ability to stop
+# at a given commit without walking the whole repo.  TODO add the stop
+# parameter
+def revlist(ui, repo, *revs, **opts):
+    """print revisions"""
+    if opts['header']:
+        full = "commit"
+    else:
+        full = None
+    copy = [x for x in revs]
+    revtree(copy, repo, full, opts['max_count'], opts['parents'])
+
+def view(ui, repo, *etc):
+    "start interactive history viewer"
+    os.chdir(repo.root)
+    os.system("hgk " + " ".join(etc))
+
+cmdtable = {
+    "view": (view, [], 'hg view'),
+    "debug-diff-tree": (difftree, [('p', 'patch', None, 'generate patch'),
+                            ('r', 'recursive', None, 'recursive'),
+                            ('P', 'pretty', None, 'pretty'),
+                            ('s', 'stdin', None, 'stdin'),
+                            ('C', 'copy', None, 'detect copies'),
+                            ('S', 'search', "", 'search')],
+                            "hg git-diff-tree [options] node1 node2"),
+    "debug-cat-file": (catfile, [('s', 'stdin', None, 'stdin')],
+                 "hg debug-cat-file [options] type file"),
+    "debug-merge-base": (base, [], "hg debug-merge-base node node"),
+    "debug-rev-list": (revlist, [('H', 'header', None, 'header'),
+                           ('t', 'topo-order', None, 'topo-order'),
+                           ('p', 'parents', None, 'parents'),
+                           ('n', 'max-count', 0, 'max-count')],
+                 "hg debug-rev-list [options] revs"),
+}
+
+def reposetup(ui, repo):
+    pass