print syntax for command upon syntax error.

git-svn-id: svn://svn.berlios.de/openocd/trunk@811 b42882b7-edfa-0310-969c-e2dbd0fdcd60

diff --git a/src/helper/command.c b/src/helper/command.c
index c1eacc00a821f5fc65eff31e0a6da414656a9c17..f86777cd6ff55592d59e2663f50cb9c683a45d8a 100644 (file)
--- a/src/helper/command.c
+++ b/src/helper/command.c
@@ -358,6 +358,19 @@ int find_and_run_command(command_context_t *context, command_t *commands, char *
        int retval = c->handler(context, c->name, words + start_word + 1, num_words - start_word - 1);
        if (retval == ERROR_COMMAND_SYNTAX_ERROR)
        {
+               /* Print help for command */
+               const char *t1="";
+               const char *t2="";
+               const char *t3="";
+               /* maximum of two levels :-) */
+               if (c->parent!=NULL)
+               {
+                       t1=c->parent->name;
+                       t2=" ";
+               }
+               t3=c->name;
+               command_run_linef(context, "help {%s%s%s}", t1, t2, t3);
+               
                
        }
        else if (retval == ERROR_COMMAND_CLOSE_CONNECTION)