logtoprocess: fix message formatting

The logtoprocess used to try formatting the message using keyword options
instead of always using the rest of the arguments. Update it to match blackbox
behavior.

Differential Revision: https://phab.mercurial-scm.org/D5180

hgext/logtoprocess.py

@@ -113,10 +113,8 b' def uisetup(ui):'
                     # try to format the log message given the remaining
                     # arguments
                     try:
-                        # Python string formatting with % either uses a
-                        # dictionary *or* tuple, but not both. If we have
-                        # keyword options, assume we need a mapping.
-                        formatted = msg[0] % (opts or msg[1:])
+                        # Format the message as blackbox does
+                        formatted = msg[0] % msg[1:]
                     except (TypeError, KeyError):
                         # Failed to apply the arguments, ignore
                         formatted = msg[0]

tests/test-logtoprocess.t

@@ -19,7 +19,7 b' Test if logtoprocess correctly captures '
   > )
   > @command(b'foo', [])
   > def foo(ui, repo):
-  >     ui.log('foo', 'a message: %(bar)s\n', bar='spam')
+  >     ui.log('foo', 'a message: %s\n', 'spam')
   > EOF
   $ cp $HGRCPATH $HGRCPATH.bak
   $ cat >> $HGRCPATH << EOF
@@ -39,7 +39,7 b' Test if logtoprocess correctly captures '
   > foo=(echo 'logtoprocess foo output:';
   >     echo "\$EVENT";
   >     echo "\$MSG1";
-  >     echo "\$OPT_BAR") > $TESTTMP/foo.log
+  >     echo "\$MSG2") > $TESTTMP/foo.log
   > EOF
 
 Running a command triggers both a ui.log('command') and a