diff --git a/ChangeLog b/ChangeLog
index 7ba7b42c39004409c49269c185e614e3d109c02b..74866dd0285d9738b15a65aa067d66bfc2b87313 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -343,6 +343,7 @@ CVS code -
 	- Remove unneeded foreground color for the Java source regex
 	  used to highlight trailing whitespace, since we now support
 	  background colors without foreground colors. (DLR)
+	- Further simplify the "groff" regexes. (DLR)
 - src/Makefile.am:
 	- If we're uninstalling, remove the "rnano" symlink. (DLR, found
 	  by Benno Schulenberg)
diff --git a/doc/nanorc.sample b/doc/nanorc.sample
index 12f41a00089256c842583a5564b91f065c41e9d8..beb24ee5154bd94af521996419832c6818037624 100644
--- a/doc/nanorc.sample
+++ b/doc/nanorc.sample
@@ -247,27 +247,22 @@
 
 ## Here is an example for groff.
 ##
-# syntax "groff" "\.m[ems]$" "\.tmac$" "^tmac." ".rof"
-## The argument of .nr or .ds
-# color cyan "^\.ds [^[[:space:]]]*"
-# color cyan "^\.nr [^[[:space:]]]*"
+# syntax "groff" "\.m[ems]$" "\.rof" "\.tmac$" "^tmac."
+## The argument of .ds or .nr
+# color cyan "^\.(ds|nr) [^[[:space:]]]*"
 ## Single character escapes
 # color brightmagenta "\\."
 ## Highlight the argument of \f or \s in the same color
-# color brightmagenta "\\f."
-# color brightmagenta "\\f\(.."
-# color brightmagenta "\\s(\+|\-)?[0-9]"
+# color brightmagenta "\\f." "\\f\(.." "\\s(\+|\-)?[0-9]"
 ## \n
-# color cyan "(\\|\\\\)n."
-# color cyan "(\\|\\\\)n\(.."
+# color cyan "(\\|\\\\)n(.|\(..)"
 # color cyan start="(\\|\\\\)n\[" end="]"
 ## Requests
 # color brightgreen "^\.[[:space:]]*[^[[:space:]]]*"
 ## Comments
 # color yellow "^\.\\".*$"
 ## Strings
-# color green "(\\|\\\\)\*."
-# color green "(\\|\\\\)\*\(.."
+# color green "(\\|\\\\)\*(.|\(..)"
 # color green start="(\\|\\\\)\*\[" end="]"
 ## Characters
 # color brightred "\\\(.."