Re: [PATCH 6/7] include $PATH in generating list of commands for "help -a"

Scott R Parish [off-list ref] writes:

+	while (1) {
+		if ((colon = strchr(path, ':')))
+			*colon = 0;
+
+		len = list_commands_in_dir(&other_cmds, path);
+		longest = MAX(longest, len);

Where do we borrow this MAX() macro?

On Linux with glibc, /usr/include/sys/param.h which is included
by git-compat-util.h (meaning, for everybody) is where we find
it, but that somehow does not sound portable assumption.