Re: subtle problem of font-lock in *compilation* buffer

[Richard Stallman]

    > /bin/sh ../libtool --tag=CC --mode=link gcc  -g -Wall --pedantic   -o 
libm17n-core.la -rpath /usr/local/lib -export-dynamic -version-info 1:0:1 
character.lo chartab.lo plist.lo m17n-core.lo mtext.lo symbol.lo textprop.lo 
mtext-lbrk.lo mtext-wseg.lo -L/usr/lib -lxml2 -lz -lpthread -lm 
-L/usr/local/lib -lthai   -ldl 
    >
    > That is perhaps because of "1:0:1".

    How can the compilation font-lock pattern distinguish this from a
    legitimate error message?

How about by the spaces in the "file name"?