gdb/mi: rename mi_lookup to mi_cmd_lookup

Lets give this function a more descriptive name.  I've also improved
the comments in the header and source files.

There should be no user visible changes after this commit.

4 files changed, 8 insertions, 6 deletions

diff --git a/gdb/mi/mi-cmd-info.c b/gdb/mi/mi-cmd-info.c
index 78377dc..c285851 100644
--- a/gdb/mi/mi-cmd-info.c
+++ b/gdb/mi/mi-cmd-info.c
@@ -82,7 +82,7 @@ mi_cmd_info_gdb_mi_command (const char *command, char **argv, int argc)
   if (cmd_name[0] == '-')
     cmd_name++;
 
-  cmd = mi_lookup (cmd_name);
+  cmd = mi_cmd_lookup (cmd_name);
 
   ui_out_emit_tuple tuple_emitter (uiout, "command");
   uiout->field_string ("exists", cmd != NULL ? "true" : "false");
diff --git a/gdb/mi/mi-cmds.c b/gdb/mi/mi-cmds.c
index 1ed8b6f..8899fdd 100644
--- a/gdb/mi/mi-cmds.c
+++ b/gdb/mi/mi-cmds.c
@@ -211,9 +211,10 @@ enum
     MI_TABLE_SIZE = 227
   };
 
-/* Exported function used to obtain info from the table.  */
+/* See mi-cmds.h.  */
+
 struct mi_cmd *
-mi_lookup (const char *command)
+mi_cmd_lookup (const char *command)
 {
   return *lookup_table (command);
 }
diff --git a/gdb/mi/mi-cmds.h b/gdb/mi/mi-cmds.h
index 8da2e39..e92737b 100644
--- a/gdb/mi/mi-cmds.h
+++ b/gdb/mi/mi-cmds.h
@@ -164,9 +164,10 @@ struct mi_cmd
   int *suppress_notification;
 };
 
-/* Lookup a command in the MI command table.  */
+/* Lookup a command in the MI command table, returns nullptr if COMMAND is
+   not found.  */
 
-extern struct mi_cmd *mi_lookup (const char *command);
+extern struct mi_cmd *mi_cmd_lookup (const char *command);
 
 /* Debug flag */
 extern int mi_debug_p;
diff --git a/gdb/mi/mi-parse.c b/gdb/mi/mi-parse.c
index 4d6afa9..b5b01cf 100644
--- a/gdb/mi/mi-parse.c
+++ b/gdb/mi/mi-parse.c
@@ -272,7 +272,7 @@ mi_parse (const char *cmd, char **token)
   }
 
   /* Find the command in the MI table.  */
-  parse->cmd = mi_lookup (parse->command);
+  parse->cmd = mi_cmd_lookup (parse->command);
   if (parse->cmd == NULL)
     throw_error (UNDEFINED_COMMAND_ERROR,
 		 _("Undefined MI command: %s"), parse->command);