diff --git a/tests/test-acl b/tests/test-acl
--- a/tests/test-acl
+++ b/tests/test-acl
@@ -44,7 +44,7 @@ cd ..
 hg clone -r 0 a b
 
 echo '[extensions]' >> $HGRCPATH
-echo 'hgext.acl =' >> $HGRCPATH
+echo 'acl =' >> $HGRCPATH
 
 config=b/.hg/hgrc
 
diff --git a/tests/test-children b/tests/test-children
--- a/tests/test-children
+++ b/tests/test-children
@@ -3,7 +3,7 @@
 
 cat <<EOF >> $HGRCPATH
 [extensions]
-hgext.children=
+children =
 EOF
 
 echo "% init"
diff --git a/tests/test-convert-baz b/tests/test-convert-baz
--- a/tests/test-convert-baz
+++ b/tests/test-convert-baz
@@ -10,7 +10,7 @@ baz my-id "mercurial <mercurial@selenic.
 
 echo "[extensions]" >> $HGRCPATH
 echo "convert=" >> $HGRCPATH
-echo 'hgext.graphlog =' >> $HGRCPATH
+echo 'graphlog =' >> $HGRCPATH
 
 echo % create baz archive
 baz make-archive baz@mercurial--convert hg-test-convert-baz
diff --git a/tests/test-convert-clonebranches b/tests/test-convert-clonebranches
--- a/tests/test-convert-clonebranches
+++ b/tests/test-convert-clonebranches
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 echo "[extensions]" >> $HGRCPATH
-echo "hgext.convert = " >> $HGRCPATH
+echo "convert = " >> $HGRCPATH
 echo "[convert]" >> $HGRCPATH
 echo "hg.tagsbranch=0" >> $HGRCPATH
 
diff --git a/tests/test-convert-darcs b/tests/test-convert-darcs
--- a/tests/test-convert-darcs
+++ b/tests/test-convert-darcs
@@ -4,7 +4,7 @@
 
 echo "[extensions]" >> $HGRCPATH
 echo "convert=" >> $HGRCPATH
-echo 'hgext.graphlog =' >> $HGRCPATH
+echo 'graphlog =' >> $HGRCPATH
 
 DARCS_EMAIL='test@example.org'; export DARCS_EMAIL
 HOME=`pwd`/do_not_use_HOME_darcs; export HOME
diff --git a/tests/test-convert-filemap b/tests/test-convert-filemap
--- a/tests/test-convert-filemap
+++ b/tests/test-convert-filemap
@@ -3,8 +3,8 @@
 HGMERGE=true; export HGMERGE
 
 echo '[extensions]' >> $HGRCPATH
-echo 'hgext.graphlog =' >> $HGRCPATH
-echo 'hgext.convert =' >> $HGRCPATH
+echo 'graphlog =' >> $HGRCPATH
+echo 'convert =' >> $HGRCPATH
 
 glog()
 {
diff --git a/tests/test-convert-hg-startrev b/tests/test-convert-hg-startrev
--- a/tests/test-convert-hg-startrev
+++ b/tests/test-convert-hg-startrev
@@ -1,8 +1,8 @@
 #!/bin/sh
 
 echo '[extensions]' >> $HGRCPATH
-echo 'hgext.graphlog =' >> $HGRCPATH
-echo 'hgext.convert =' >> $HGRCPATH
+echo 'graphlog =' >> $HGRCPATH
+echo 'convert =' >> $HGRCPATH
 
 glog()
 {
diff --git a/tests/test-convert-mtn b/tests/test-convert-mtn
--- a/tests/test-convert-mtn
+++ b/tests/test-convert-mtn
@@ -7,7 +7,7 @@
 mtndir=.monotone
 echo "[extensions]" >> $HGRCPATH
 echo "convert=" >> $HGRCPATH
-echo 'hgext.graphlog =' >> $HGRCPATH
+echo 'graphlog =' >> $HGRCPATH
 
 HOME=`pwd`/do_not_use_HOME_mtn; export HOME
 # Windows version of monotone home
diff --git a/tests/test-convert-splicemap b/tests/test-convert-splicemap
--- a/tests/test-convert-splicemap
+++ b/tests/test-convert-splicemap
@@ -2,7 +2,7 @@
 
 echo "[extensions]" >> $HGRCPATH
 echo "convert=" >> $HGRCPATH
-echo 'hgext.graphlog =' >> $HGRCPATH
+echo 'graphlog =' >> $HGRCPATH
 
 glog()
 {
diff --git a/tests/test-convert-svn-branches b/tests/test-convert-svn-branches
--- a/tests/test-convert-svn-branches
+++ b/tests/test-convert-svn-branches
@@ -9,7 +9,7 @@ fix_path()
 
 echo "[extensions]" >> $HGRCPATH
 echo "convert = " >> $HGRCPATH
-echo "hgext.graphlog =" >> $HGRCPATH
+echo "graphlog =" >> $HGRCPATH
 
 svnadmin create svn-repo
 cat "$TESTDIR/svn/branches.svndump" | svnadmin load svn-repo > /dev/null
diff --git a/tests/test-convert-svn-source b/tests/test-convert-svn-source
--- a/tests/test-convert-svn-source
+++ b/tests/test-convert-svn-source
@@ -9,7 +9,7 @@ fix_path()
 
 echo "[extensions]" >> $HGRCPATH
 echo "convert = " >> $HGRCPATH
-echo 'hgext.graphlog =' >> $HGRCPATH
+echo 'graphlog =' >> $HGRCPATH
 
 svnadmin create svn-repo
 
diff --git a/tests/test-convert-svn-startrev b/tests/test-convert-svn-startrev
--- a/tests/test-convert-svn-startrev
+++ b/tests/test-convert-svn-startrev
@@ -9,7 +9,7 @@ fix_path()
 
 echo "[extensions]" >> $HGRCPATH
 echo "convert = " >> $HGRCPATH
-echo "hgext.graphlog =" >> $HGRCPATH
+echo "graphlog =" >> $HGRCPATH
 
 svnadmin create svn-repo
 cat "$TESTDIR/svn/startrev.svndump" | svnadmin load svn-repo > /dev/null
diff --git a/tests/test-convert-svn-tags b/tests/test-convert-svn-tags
--- a/tests/test-convert-svn-tags
+++ b/tests/test-convert-svn-tags
@@ -9,7 +9,7 @@ fix_path()
 
 echo "[extensions]" >> $HGRCPATH
 echo "convert = " >> $HGRCPATH
-echo "hgext.graphlog =" >> $HGRCPATH
+echo "graphlog =" >> $HGRCPATH
 
 svnadmin create svn-repo
 cat "$TESTDIR/svn/tags.svndump" | svnadmin load svn-repo > /dev/null
diff --git a/tests/test-convert-tla b/tests/test-convert-tla
--- a/tests/test-convert-tla
+++ b/tests/test-convert-tla
@@ -10,7 +10,7 @@ tla my-id "mercurial <mercurial@selenic.
 
 echo "[extensions]" >> $HGRCPATH
 echo "convert=" >> $HGRCPATH
-echo 'hgext.graphlog =' >> $HGRCPATH
+echo 'graphlog =' >> $HGRCPATH
 
 echo % create tla archive
 tla make-archive tla@mercurial--convert `pwd`/hg-test-convert-tla
diff --git a/tests/test-mq-caches b/tests/test-mq-caches
--- a/tests/test-mq-caches
+++ b/tests/test-mq-caches
@@ -2,7 +2,7 @@
 
 branches=.hg/branchheads.cache
 echo '[extensions]' >> $HGRCPATH
-echo 'hgext.mq=' >> $HGRCPATH
+echo 'mq =' >> $HGRCPATH
 
 show_branch_cache()
 {
diff --git a/tests/test-mq-merge b/tests/test-mq-merge
--- a/tests/test-mq-merge
+++ b/tests/test-mq-merge
@@ -15,7 +15,7 @@ checkundo()
 }
 
 echo "[extensions]" >> $HGRCPATH
-echo "hgext.mq=" >> $HGRCPATH
+echo "mq =" >> $HGRCPATH
 
 # Commit two dummy files in "init" changeset
 hg init t
diff --git a/tests/test-mq-safety b/tests/test-mq-safety
--- a/tests/test-mq-safety
+++ b/tests/test-mq-safety
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 echo '[extensions]' >> $HGRCPATH
-echo 'hgext.mq =' >> $HGRCPATH
+echo 'mq =' >> $HGRCPATH
 
 hg init repo
 cd repo
diff --git a/tests/test-parentrevspec b/tests/test-parentrevspec
--- a/tests/test-parentrevspec
+++ b/tests/test-parentrevspec
@@ -23,7 +23,7 @@ hg init repo
 cd repo
 
 echo '[extensions]' > .hg/hgrc
-echo 'hgext.parentrevspec =' >> .hg/hgrc
+echo 'parentrevspec =' >> .hg/hgrc
 
 commit '0: add foo'
 commit '1: change foo 1'
diff --git a/tests/test-purge b/tests/test-purge
--- a/tests/test-purge
+++ b/tests/test-purge
@@ -2,7 +2,7 @@
 
 cat <<EOF >> $HGRCPATH
 [extensions]
-hgext.purge=
+purge =
 EOF
 
 echo % init