While translating the rpm 5.1 I found this piece of code in
compile_single_pattern() in rpmio/rpmgrep.c:

	fprintf(stderr, _("%s: Too many %spatterns (max %d)\n"), __progname,
		(filename == NULL)? "command-line " : "", MAX_PATTERN_COUNT);

There is no way here to translate "command-line ".  Note that it is
not enough to just mark "command-line " too for translation.  In the
general case won't work to translate sentences built from parts like
that.  (It would work for Swedish in this case, but Swedish and
English are relatively close, in a global perspective.)  It needs to
be separated into two complete messages.