Many improvements, bug fixes

*: Allow math functions to be enabled via configure
*: Allow support for references to be removed
*: Documentation updates
*: Jim_ListLength() now returns the result directly
*: Optimise list -> dict conversion
*: Consistent capitalisation of some structures, functions
*: Add support for abbreviations to Jim_GetEnum()
*: The commands to 'info' may be abbreviated
*: Use abbreviation support in parsing options to 'subst'
*: Use Jim_GetEnum() to parse return code names
*: Optimise 'array get', 'array set' if no conversion needed
*: Import Tcl string.test
*: string compare now returns -1,0,1 like Tcl
*: Fix 'string last' with index=0
*: Add support for 'string reverse'
*: Add -nocase option to 'string equal'
*: Fix infinite loop in 'string repeat str -1'
*: Support braced patterns in glob
*: glob should not return dot files unless the pattern starts with .
*: Simplify glob.tcl by using some new features
*: When creating C extensions from Tcl, preserve newlines and invoke
   with Jim_Eval_Named() to produce more meaningful error messages.
*: Also remove all comments, not just those starting in the first column
*: Add support for 'n+n' and 'n-n' in string/list indexes (Tcl 8.5)
*: Add a level to the stack trace for 'return -code error'
*: 'return -code' should also affect the return from 'source' (see Tcl docs)
*: Fix lsort -command
*: Some systems don't have INFINITY

1 files changed, 18 insertions, 15 deletions

diff --git a/jim-subcmd.c b/jim-subcmd.c
index 24af265..e246941 100644
--- a/jim-subcmd.c
+++ b/jim-subcmd.c
@@ -70,6 +70,21 @@ static void show_full_usage(Jim_Interp *interp, const jim_subcmd_type *ct, int a
     }
 }
 
+static void add_cmd_usage(Jim_Interp *interp, const jim_subcmd_type *command_table, int argc, Jim_Obj *const *argv)
+{
+    Jim_AppendStrings(interp, Jim_GetResult(interp), Jim_GetString(argv[0], NULL), NULL);
+    if (command_table->args && *command_table->args) {
+        Jim_AppendStrings(interp, Jim_GetResult(interp), " ", command_table->args, NULL);
+    }
+}
+
+static void set_wrong_args(Jim_Interp *interp, const jim_subcmd_type *command_table, int argc, Jim_Obj *const *argv)
+{
+    Jim_SetResultString(interp, "wrong # args: must be \"", -1);
+    add_cmd_usage(interp, command_table, argc, argv);
+    Jim_AppendStrings(interp, Jim_GetResult(interp), "\"", NULL);
+}
+
 const jim_subcmd_type *
 Jim_ParseSubCmd(Jim_Interp *interp, const jim_subcmd_type *command_table, int argc, Jim_Obj *const *argv)
 {
@@ -169,7 +184,7 @@ Jim_ParseSubCmd(Jim_Interp *interp, const jim_subcmd_type *command_table, int ar
 
     /* Check the number of args */
     if (argc - 2 < ct->minargs || (ct->maxargs >= 0 && argc - 2> ct->maxargs)) {
-        Jim_SetResultString(interp, "wrong # args: should be \"", -1);
+        Jim_SetResultString(interp, "wrong # args: must be \"", -1);
         add_subcmd_usage(interp, ct, argc, argv);
         Jim_AppendStrings(interp, Jim_GetResult(interp), "\"", NULL);
 
@@ -192,9 +207,7 @@ int Jim_CallSubCmd(Jim_Interp *interp, const jim_subcmd_type *ct, int argc, Jim_
             ret = ct->function(interp, argc - 2, argv + 2);
         }
         if (ret < 0) {
-            Jim_SetResultString(interp, "wrong # args: should be \"", -1);
-            add_subcmd_usage(interp, ct, argc, argv);
-            Jim_AppendStrings(interp, Jim_GetResult(interp), "\"", NULL);
+            set_wrong_args(interp, ct, argc, argv);
             ret = JIM_ERR;
         }
     }
@@ -209,14 +222,6 @@ int Jim_SubCmdProc(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 }
 
 /* The following two functions are for normal commands */
-static void add_cmd_usage(Jim_Interp *interp, const jim_subcmd_type *command_table, int argc, Jim_Obj *const *argv)
-{
-    Jim_AppendStrings(interp, Jim_GetResult(interp), Jim_GetString(argv[0], NULL), NULL);
-    if (command_table->args && *command_table->args) {
-        Jim_AppendStrings(interp, Jim_GetResult(interp), " ", command_table->args, NULL);
-    }
-}
-
 int
 Jim_CheckCmdUsage(Jim_Interp *interp, const jim_subcmd_type *command_table, int argc, Jim_Obj *const *argv)
 {
@@ -266,9 +271,7 @@ Jim_CheckCmdUsage(Jim_Interp *interp, const jim_subcmd_type *command_table, int
 
     /* Check the number of args */
     if (argc - 1 < command_table->minargs || (command_table->maxargs >= 0 && argc - 1> command_table->maxargs)) {
-        Jim_SetResultString(interp, "wrong # args: should be \"", -1);
-        add_cmd_usage(interp, command_table, argc, argv);
-        Jim_AppendStrings(interp, Jim_GetResult(interp), "\"", NULL);
+        set_wrong_args(interp, command_table, argc, argv);
         Jim_AppendStrings(interp, Jim_GetResult(interp), "\"\nUse \"", Jim_GetString(argv[0], NULL), " -help\" for help", NULL);
         return JIM_ERR;
     }