[PATCH] Add comment for mi_run_cmd_full

[Simon Marchi <simon.marchi@ericsson.com>]

It should clear up confusion about the args parameter to mi_run_cmd_full.

If you have a better wording, let me know, I am not so good at that
english thing.

gdb/testsuite/ChangeLog:

2014-05-21  Simon Marchi  <simon.marchi@ericsson.com>

	* lib/mi-support.exp (mi_run_cmd_full): Add comments.
---
 gdb/testsuite/lib/mi-support.exp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gdb/testsuite/lib/mi-support.exp b/gdb/testsuite/lib/mi-support.exp
index 6d011b9..26015dc 100644
--- a/gdb/testsuite/lib/mi-support.exp
+++ b/gdb/testsuite/lib/mi-support.exp
@@ -806,6 +806,12 @@ proc mi_gdb_test { args } {
 # In patterns, the newline sequence ``\r\n'' is matched explicitly as
 # ``.*$'' could swallow up output that we attempt to match elsewhere.
 
+# use_mi_command selects whether MI or CLI commands are used by the
+# procedure.
+# args is passed to the command used to run the test program, "run" or
+# "-exec-run", depending on the value of use_mi_command. Therefore, if
+# use_mi_command is false, they are effectively args to the test program.
+# If use_mi_command is true, they are simply arguments to -exec-run.
 proc mi_run_cmd_full {use_mi_command args} {
     global suppress_flag
     if { $suppress_flag } {
-- 
2.0.0.rc0