some tabs to spaces

cd src
    grep -P -n '\t' *.c | grep -v "1:"
    cd ../include
    grep -P -n '\t' *.h | grep -v "1:"
    cd ..

side note: win/Qt/*.cpp are full of tabs

sys/share/pcmain.c

@@ -296,7 +296,7 @@ _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);*/
         if (argcheck(argc, argv, ARG_DEBUG) == 1) {
             argc--;
             argv++;
-	}
+        }
 
         if (argc > 1 && !strncmp(argv[1], "-d", 2) && argv[1][2] != 'e') {
             /* avoid matching "-dec" for DECgraphics; since the man page
@@ -566,7 +566,7 @@ process_options(int argc, char *argv[])
                 switch_symbols(TRUE);
             }
             break;
-        /*	case 'D': */
+        /* case 'D': */
         case 'd':
             if (!strncmpi(argv[0] + 1, "DEC", 3)) {
                 load_symset("DECGraphics", PRIMARYSET);