shithub: mc

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Improve usage message.

    Mention what the debug options are, and improve the formatting
    on them.

--- a/6/main.c

+++ b/6/main.c

@@ -41,12 +41,13 @@

     printf("\t-d\tPrint debug dumps. Recognized options: f r p i\n");

     printf("\t-G\tGenerate asm in gas syntax\n");

     printf("\t-8\tGenerate asm in plan 9 syntax\n");

-    printf("\t\t\tf: log folded trees\n");

-    printf("\t\t\tl: log lowered pre-cfg trees\n");

-    printf("\t\t\tT: log tree immediately\n");

-    printf("\t\t\tr: log register allocation activity\n");

-    printf("\t\t\ti: log instruction selection activity\n");

-    printf("\t\t\tu: log type unifications\n");

+    printf("\t-d opts: additional debug logging. Options are listed below:\n");

+    printf("\t\tf: log folded trees\n");

+    printf("\t\tl: log lowered pre-cfg trees\n");

+    printf("\t\tT: log tree immediately\n");

+    printf("\t\tr: log register allocation activity\n");

+    printf("\t\ti: log instruction selection activity\n");

+    printf("\t\tu: log type unifications\n");

 }

 static void swapout(char* buf, size_t sz, char* suf) {