[PATCH 3 of 4] solaris: tests can't use tail -n

[Danek Duvall]

# HG changeset patch
# User Danek Duvall <danek.duvall at oracle.com>
# Date 1377297397 25200
# Node ID 7d2fe0113e5c21bc204616649256d1bb59d7d7f5
# Parent  bd488d5b5763ef8c4bc7b4a69e4073861e2487a1
solaris: tests can't use tail -n

Solaris tail doesn't recognize the -n option.  Remove the one use of it and
add a test case to check-code.py.

diff --git a/contrib/check-code.py b/contrib/check-code.py
--- a/contrib/check-code.py
+++ b/contrib/check-code.py
@@ -68,6 +68,7 @@ testpats = [
     (r'echo -n', "don't use 'echo -n', use printf"),
     (r'(^| )wc[^|]*$\n(?!.*\(re\))', "filter wc output"),
     (r'head -c', "don't use 'head -c', use 'dd'"),
+    (r'tail -n', "don't use the '-n' option to tail, just use '-<num>'"),
     (r'sha1sum', "don't use sha1sum, use $TESTDIR/md5sum.py"),
     (r'ls.*-\w*R', "don't use 'ls -R', use 'find'"),
     (r'printf.*[^\\]\\([1-9]|0\d)', "don't use 'printf \NNN', use Python"),
diff --git a/tests/test-import-merge.t b/tests/test-import-merge.t
--- a/tests/test-import-merge.t
+++ b/tests/test-import-merge.t
@@ -129,7 +129,7 @@ Test that --exact on a bad header doesn'
   $ echo a>>a
   $ hg ci -m3
   $ hg export 2 | head -7 > ../a.patch
-  $ hg export tip | tail -n +8 >> ../a.patch
+  $ hg export tip | tail +8 >> ../a.patch
 
   $ cd ..
   $ hg clone -qr0 repo3 repo3-clone