new flag to show executing shell command

[chenzero]

Hello,
I am a new beginner of gnu Make. in some cases, I fell that it will help 
if Make can print the
executing shell command even suppressed, for example,  to identify 
problem more easy.

Since it seems that Make doesn't have this flag, I tried to change code.
the code diff is in below and happy to hear what your idea.

Thanks!
chenzero

code diff
-----------------------
diff --git a/commands.c b/commands.c
index ec5853a..922a807 100644
--- a/commands.c
+++ b/commands.c
@@ -415,18 +415,26 @@ chop_commands (struct commands *cmds)
         const char *p = lines[idx];

         while (isblank (*p) || *p == '-' || *p == '@' || *p == '+')
+        {
             switch (*(p++))
             {
             case '+':
                 flags |= COMMANDS_RECURSE;
                 break;
             case '@':
+                if (!print_cmd_flag) {
                     flags |= COMMANDS_SILENT;
+                }
                 break;
             case '-':
                 flags |= COMMANDS_NOERROR;
                 break;
             }
+        }

         /* If no explicit '+' was given, look for MAKE variable 
references.  */
         if (!(flags & COMMANDS_RECURSE)
diff --git a/main.c b/main.c
index c2d4a0c..5991946 100644
--- a/main.c
+++ b/main.c
@@ -184,6 +185,9 @@ int touch_flag;

 int just_print_flag;

+/* print executing commands even surpressed by @ */
+int print_cmd_flag;
+
 /* Print debugging info (--debug).  */

 static struct stringlist *db_flags = 0;
@@ -192,7 +196,6 @@ static int debug_flag = 0;
 int db_level = 0;

 /* Synchronize output (--output-sync).  */
-
 char *output_sync_option = 0;

 #ifdef WINDOWS32
@@ -384,6 +387,10 @@ static const char *const usage[] =
     N_("\
   -n, --just-print, --dry-run, --recon\n\
                               Don't actually run any recipe; just 
print them.\n"),
+    N_("\
+  -z, --print-cmd\n\
+                              Print executing command even supressed by 
@.\n"),
     N_("\
   -o FILE, --old-file=FILE, --assume-old=FILE\n\
                               Consider FILE to be very old and don't 
remake it.\n"),
@@ -441,6 +448,8 @@ static const struct command_switch switches[] =
     { 'L', flag, &check_symlink_flag, 1, 1, 0, 0, 0, 
"check-symlink-times" },
     { 'm', ignore, 0, 0, 0, 0, 0, 0, 0 },
     { 'n', flag, &just_print_flag, 1, 1, 1, 0, 0, "just-print" },
+    { 'z', flag, &print_cmd_flag, 1, 1, 1, 0, 0, "print-cmd"},
     { 'p', flag, &print_data_base_flag, 1, 1, 0, 0, 0, 
"print-data-base" },
     { 'q', flag, &question_flag, 1, 1, 1, 0, 0, "question" },
     { 'r', flag, &no_builtin_rules_flag, 1, 1, 0, 0, 0, 
"no-builtin-rules" },