Introduce \. as a NOP command. The purpose of this is to act as a

zero-width delimiter between a macro invocation and text beyond it,
so that you can define (say) a macro which expands to a Euro sign
and then write `\eur\.2500' to avoid having space between the Euro
sign and the number.

[originally from svn r3982]

1 files changed, 13 insertions, 2 deletions

diff --git a/doc/input.but b/doc/input.but
index 587836f..7755d57 100644
--- a/doc/input.but
+++ b/doc/input.but
@@ -1201,8 +1201,19 @@ macro, using the \c{\\define} command:
 
 \c \define{eur} \u20AC{EUR }
 
-Then you can just write
+Then you can just write ...
 
 \c This is likely to cost \eur 2500 at least.
 
-\# FIXME: need a NOP to allow text to directly follow this. \.?
+... except that that's not terribly good, because you end up with a
+space between the Euro sign and the number. In this case, it's
+helpful to use the special \c{\\.} command, which is defined to do
+nothing at all! But it acts as a separator between your macro and
+the next character:
+
+\c This is likely to cost \eur\.2500 at least.
+
+This way, you will see no space between the Euro sign and the number
+(although, of course, there will be space between \q{EUR} and the
+number if the Euro sign is not available, because the macro
+definition specifically asked for it).