run-tests: add support for using 127.0.0.1 as a glob

Some systems don't have a 127/8 address for localhost (I noticed this
on a FreeBSD jail). In order to work around this, use 127.0.0.1 as a
glob pattern. A future commit will update needed output lines and add
a requirement to check-code.py.

tests/run-tests.py

@@ -949,13 +949,18 b' class PythonTest(Test):'
 
         return result
 
-# This script may want to drop globs from lines matching these patterns on
-# Windows, but check-code.py wants a glob on these lines unconditionally.  Don't
-# warn if that is the case for anything matching these lines.
+# Some glob patterns apply only in some circumstances, so the script
+# might want to remove (glob) annotations that otherwise should be
+# retained.
 checkcodeglobpats = [
+    # On Windows it looks like \ doesn't require a (glob), but we know
+    # better.
     re.compile(br'^pushing to \$TESTTMP/.*[^)]$'),
     re.compile(br'^moving \S+/.*[^)]$'),
-    re.compile(br'^pulling from \$TESTTMP/.*[^)]$')
+    re.compile(br'^pulling from \$TESTTMP/.*[^)]$'),
+    # Not all platforms have 127.0.0.1 as loopback (though most do),
+    # so we always glob that too.
+    re.compile(br'.*127.0.0.1.*$'),
 ]
 
 bchr = chr
@@ -1263,6 +1268,7 b' class TTest(Test):'
                         return True
                 return b'-glob'
             return True
+        el = el.replace(b'127.0.0.1', b'*')
         i, n = 0, len(el)
         res = b''
         while i < n:

tests/test-run-tests.t

@@ -735,6 +735,10 b' backslash on end of line with glob match'
 
   $ rm -f test-glob-backslash.t
 
+Test globbing of 127.0.0.1
+  $ echo 172.16.18.1
+  127.0.0.1 (glob)
+
 Test reusability for third party tools
 ======================================