add POV-Ray syntax from Donnie Berkholz, with a few tweaks of mine

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3928 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

 CVS code -
 - General:
 	- Miscellaneous comment fixes. (DLR)
+	- Add syntax for POV-Ray files.  New file doc/syntax/pov.nanorc;
+	  changes to doc/nanorc.sample.in and doc/syntax/Makefile.am.
+	  (Donnie Berkholz, minor tweaks by DLR)
 - AUTHORS:
 	- Update for the 2.0 branch of nano. (DLR)
 - nano.spec.in, doc/faq.html:

doc/nanorc.sample.in

@@ -255,3 +255,6 @@
 
 ## Bourne shell scripts
 # include "@PKGDATADIR@/sh.nanorc"
+
+## POV-Ray
+# include "@PKGDATADIR@/pov.nanorc"

doc/syntax/Makefile.am

@@ -8,6 +8,7 @@ pkgdata_DATA =	asm.nanorc \
 		nanorc.nanorc \
 		patch.nanorc \
 		perl.nanorc \
+		pov.nanorc \
 		python.nanorc \
 		ruby.nanorc \
 		sh.nanorc \

doc/syntax/pov.nanorc

+## Here is an example for POV-Ray.
+##
+syntax "pov" "\.(pov|POV|povray|POVRAY)$"
+color brightcyan "^[[:space:]]*#[[:space:]]*(declare)"
+color brightyellow "\<(sphere|cylinder|translate|matrix|rotate|scale)\>"
+color brightyellow "\<(orthographic|location|up|right|direction|clipped_by)\>"
+color brightyellow "\<(fog_type|fog_offset|fog_alt|rgb|distance|transform)\>"
+color brightred "^\<(texture)\>"
+color brightred "\<(light_source|background)\>"
+color brightred "\<(fog|object|camera)\>"
+color green "(\{|\}|\(|\)|\;|\]|\[|`|\\|\$|<|>|!|=|&|\|)"
+color brightmagenta "\<(union|group|subgroup)\>"
+## Comment highlighting
+color brightblue "//.*"
+color brightblue start="/\*" end="\*/"