make: :: embeded in targets

["Simon J. Gerraty" <sjg%crufty.net@localhost>]

One of my collegues has been running freebsd's regression tests with
bmake...

The patch below, allows something like:

all: silly::target
silly::target:
        @echo hi

to work, instead of saying

make: don't know how to make silly::target. Stop

Index: parse.c
===================================================================
RCS file: /cvsroot/src/usr.bin/make/parse.c,v
retrieving revision 1.176
diff -u -p -r1.176 parse.c
--- parse.c     20 Feb 2011 23:12:09 -0000      1.176
+++ parse.c     4 Mar 2011 06:11:22 -0000
@@ -1169,9 +1169,22 @@ ParseDoDependency(char *line)
 
     do {
        for (cp = line; *cp && (ParseIsEscaped(lstart, cp) ||
-                    !(isspace((unsigned char)*cp) ||
-                        *cp == '!' || *cp == ':' || *cp == LPAREN));
+                    !(isspace((unsigned char)*cp) || *cp == LPAREN));
                 cp++) {
+           if (*cp == ':' || *cp == '!') {
+               /*
+                * ignore sequences of ':' and '!' that are not
+                * followed by white-space or end-of-line.
+                */
+               size_t x;
+
+               x = strspn(cp, ":!");
+               if (cp[x] != '\0' && !isspace((unsigned char)cp[x])) {
+                   cp += x - 1;
+                   continue;
+               }
+               break;
+           }
            if (*cp == '$') {
                /*
                 * Must be a dynamic source (would have been expanded