tests: don't match blank output lines as regexes in unified tests
Currently, the following unified test will pass:
$ echo foo
A blank output line (a line containing just two spaces) will match any
output.
The patch modifies the unified test runner to ignore empty strings
strings when do regular expression matching.
--- a/tests/run-tests.py Wed Sep 22 16:05:58 2010 -0500
+++ b/tests/run-tests.py Wed Sep 22 16:05:59 2010 -0500
@@ -530,7 +530,7 @@
if el == l: # perfect match (fast)
postout.append(" " + l)
- elif el and rematch(el, l): # fallback regex match
+ elif el and el[2:] and rematch(el, l): # fallback regex match
postout.append(" " + el)
else: # mismatch - let diff deal with it
postout.append(" " + l)