For the first time ever I've encountered a situation where the removal
of environments would be a good thing, thus I'm going to implement it,
I think :-)
The snippet below has been taken from the forthcoming groff_hdtbl.man,
with minor simplifications. The main idea is to wrap the `.I' man
macro so that the font family is temporarily switched to `C'.
Note that the `.I' macro uses an input trap which forces us to find a
solution within a single line.
This is probably something for the Wiki...
. \" We have to solve the following problem. In the following code
. \"
. \" foo
. \" .CI bar
. \" foo
. \"
. \" the space immediately after `bar' should not be taken from the `C'
. \" family. At the same time, this
. \"
. \" foo
. \" .CI bar\c
. \" foo
. \"
. \" should work also. To make both constraints work with a single macro
. \" we need a means to test whether there is a `\c' in the arguments.
. \" The only solution I'm aware of is to switch to an environment with
. \" an empty `current partial line' and emitting the arguments, then
. \" testing the \n[.int] register. Since it is not possible currently
. \" to remove environments we use a counter to guarantee empty
. \" environments.
.
. nr env-count 0 1
.
. de CI
. ev e-\\n+[env-count]
. nop \&\\$*
. nr have-int \\n[.int]
. ev
. fam C
. ie \\n[have-int] \{\
. I \&\\$*
. fam
. \}
. el \
. I \&\\$*\F[]
..
Werner
_______________________________________________
Groff mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/groff
