Merge branch 'ep/trace-doc-sample-fix'

Fix a typo in an example in the trace API documentation.

* ep/trace-doc-sample-fix:
api-trace.txt: fix typo

diff --combined Documentation/technical/api-trace.txt
index 389ae16d150f9eca5f4f137739dfb55e742f17dd,0aa0fda2c9805e04e9a2d873a9271a751dc0d78f..fadb5979c48b6c128f71db1588412bf0a8204677
--- 1/Documentation/technical/api-trace.txt
--- 2/Documentation/technical/api-trace.txt
+++ b/Documentation/technical/api-trace.txt
@@@ -28,7 -28,7 +28,7 @@@ static struct trace_key trace_foo = TRA
  
  static void trace_print_foo(const char *message)
  {
-       trace_print_key(&trace_foo, message);
+       trace_printf_key(&trace_foo, "%s", message);
  }
  ------------
  +
@@@ -95,46 -95,3 +95,46 @@@ for (;;) 
  }
  trace_performance(t, "frotz");
  ------------
 +
 +Bugs & Caveats
 +--------------
 +
 +GIT_TRACE_* environment variables can be used to tell Git to show
 +trace output to its standard error stream. Git can often spawn a pager
 +internally to run its subcommand and send its standard output and
 +standard error to it.
 +
 +Because GIT_TRACE_PERFORMANCE trace is generated only at the very end
 +of the program with atexit(), which happens after the pager exits, it
 +would not work well if you send its log to the standard error output
 +and let Git spawn the pager at the same time.
 +
 +As a work around, you can for example use '--no-pager', or set
 +GIT_TRACE_PERFORMANCE to another file descriptor which is redirected
 +to stderr, or set GIT_TRACE_PERFORMANCE to a file specified by its
 +absolute path.
 +
 +For example instead of the following command which by default may not
 +print any performance information:
 +
 +------------
 +GIT_TRACE_PERFORMANCE=2 git log -1
 +------------
 +
 +you may want to use:
 +
 +------------
 +GIT_TRACE_PERFORMANCE=2 git --no-pager log -1
 +------------
 +
 +or:
 +
 +------------
 +GIT_TRACE_PERFORMANCE=3 3>&2 git log -1
 +------------
 +
 +or:
 +
 +------------
 +GIT_TRACE_PERFORMANCE=/path/to/log/file git log -1
 +------------