updated for version 7.2-266
diff --git a/runtime/doc/map.txt b/runtime/doc/map.txt
index 6072957..e7b9378 100644
--- a/runtime/doc/map.txt
+++ b/runtime/doc/map.txt
@@ -224,6 +224,10 @@
The result of the InsertDot() function will be inserted. It could check the
text before the cursor and start omni completion when some condition is met.
+For abbreviations |v:char| is set to the character that was typed to trigger
+the abbreviation. You can use this to decide how to expand the {lhs}. You
+can't change v:char and you should not insert it.
+
Be very careful about side effects! The expression is evaluated while
obtaining characters, you may very well make the command dysfunctional.
For this reason the following is blocked: