toni@erix.UUCP (Toni Roth) (07/30/85)
I've written a nroff/troff macro package for formatting standard
documents. Now I'm trying to use lex to make an "interface" to the
user, so he won't have to learn *roff. As an example: if he wants a new
line, he writes ":nl." in his document. This is to be translated to
".NL". The problem is that this ":nl." can appear anywhere in the text
Look at these examples:
1:
text text text text:nl.text text text text
2:
text text text text :nl.
text text text text
3:
text text text text
:nl.text text text text
4:
text text text text
:nl.
text text text text
I want them all to result in this:
text text text text
.NL
text text text text
I could of course write something like:
"\n:nl.\n" printf("\n.NL\n");
"\n:nl." printf("\n.NL\n");
":nl.\n" printf("\n.NL\n");
":nl." printf("\n.NL\n");
But as the action is the same, I believe there is one pattern that
covers all four of these (I don't want ":nl." more than once in the
pattern and I want the action part as easy as now). How do I write this
pattern?
Thanks in advance!