diff --git a/asm.nanorc b/asm.nanorc
index c5c5bd5..b08e250 100644
--- a/asm.nanorc
+++ b/asm.nanorc
@@ -1,6 +1,8 @@
 ## Here is an example for assembler.
 ##
 syntax "ASM" "\.(S|s|asm)$"
+comment "//"
+
 color red "\<[A-Z_]{2,}\>"
 color brightgreen "\.(data|subsection|text)"
 color green "\.(align|file|globl|global|hidden|section|size|type|weak)"
diff --git a/awk.nanorc b/awk.nanorc
index ad343aa..f41b8bf 100644
--- a/awk.nanorc
+++ b/awk.nanorc
@@ -1,5 +1,6 @@
 syntax "AWK" "\.awk$"
 header "^#!.*bin/(env +)?awk( |$)"
+comment "#"
 
 color brightyellow "\$[A-Za-z0-9_!@#$*?-]+"
 color brightyellow "\<(ARGC|ARGIND|ARGV|BINMODE|CONVFMT|ENVIRON|ERRNO|FIELDWIDTHS)\>"
diff --git a/c.nanorc b/c.nanorc
index 7b16cf6..f2fe00d 100644
--- a/c.nanorc
+++ b/c.nanorc
@@ -1,6 +1,7 @@
 ## Here is an example for C/C++.
 ##
 syntax "C" "\.(c(c|pp|xx)?|C)$" "\.(h(h|pp|xx)?|H)$" "\.ii?$" "\.(def)$"
+comment "//"
 color brightred "\<[A-Z_][0-9A-Z_]+\>" 
 color green "\<(float|double|bool|char|wchar_t|int|short|long|sizeof|enum|void|static|const|struct|union|typedef|extern|(un)?signed|inline)\>"
 color green "\<((s?size)|(char(16|32))|((u_?)?int(_fast|_least)?(8|16|32|64))|u?int(max|ptr))_t\>"
diff --git a/cmake.nanorc b/cmake.nanorc
index e5ae059..728d14a 100644
--- a/cmake.nanorc
+++ b/cmake.nanorc
@@ -1,6 +1,7 @@
 ## CMake syntax highlighter for GNU Nano
 ##
 syntax "CMake" "(CMakeLists\.txt|\.cmake)$"
+comment "#"
 
 icolor green "^[[:space:]]*[A-Z0-9_]+"
 icolor brightyellow "^[[:space:]]*(include|include_directories|include_external_msproject)\>"
diff --git a/fortran.nanorc b/fortran.nanorc
index 2b77e6b..73534d8 100644
--- a/fortran.nanorc
+++ b/fortran.nanorc
@@ -1,7 +1,7 @@
 ## Here is an example for Fortran 90/95
 
 syntax "Fortran" "\.([Ff]|[Ff]90|[Ff]95|[Ff][Oo][Rr])$"
-
+comment "!"
 #color red "\<[A-Z_]a[0-9A-Z_]+\>" 
 color red "\<[0-9]+\>" 
 
diff --git a/gentoo.nanorc b/gentoo.nanorc
index 24b5485..4959fa9 100644
--- a/gentoo.nanorc
+++ b/gentoo.nanorc
@@ -1,6 +1,8 @@
 ## Here is an example for ebuilds/eclasses
 ##
 syntax "Ebuild" "\.e(build|class)$"
+comment "#"
+
 ## All the standard portage functions
 color brightgreen "^src_(unpack|compile|install|test)" "^pkg_(config|nofetch|setup|(pre|post)(inst|rm))"
 ## Highlight bash related syntax
diff --git a/go.nanorc b/go.nanorc
index b603c2f..d5d8ca8 100644
--- a/go.nanorc
+++ b/go.nanorc
@@ -1,4 +1,5 @@
 syntax "GO" "\.go$"
+comment "//"
 
 color brightblue "[A-Za-z_][A-Za-z0-9_]*[[:space:]]*[()]"
 color brightblue "\<(append|cap|close|complex|copy|delete|imag|len)\>"
diff --git a/groff.nanorc b/groff.nanorc
index 6a0ecc7..508c4ab 100644
--- a/groff.nanorc
+++ b/groff.nanorc
@@ -1,6 +1,8 @@
 ## Here is an example for groff.
 ##
 syntax "Groff" "\.m[ems]$" "\.rof" "\.tmac$" "^tmac."
+comment ".\""
+
 ## The argument of .ds or .nr
 color cyan "^\.(ds|nr) [^[[:space:]]]*"
 ## Single character escapes
diff --git a/java.nanorc b/java.nanorc
index 53b0b5e..f285462 100644
--- a/java.nanorc
+++ b/java.nanorc
@@ -1,6 +1,8 @@
 ## Here is an example for Java.
 ##
 syntax "Java" "\.java$"
+comment "//"
+
 color green "\<(boolean|byte|char|double|float|int|long|new|short|this|transient|void)\>"
 color red "\<(break|case|catch|continue|default|do|else|finally|for|if|return|switch|throw|try|while)\>"
 color cyan "\<(abstract|class|extends|final|implements|import|instanceof|interface|native|package|private|protected|public|static|strictfp|super|synchronized|throws|volatile)\>"
diff --git a/javascript.nanorc b/javascript.nanorc
index 85925d3..0f5c236 100644
--- a/javascript.nanorc
+++ b/javascript.nanorc
@@ -1,5 +1,5 @@
 syntax "JavaScript" "\.js$"
-
+comment "//"
 color blue   "\<[-+]?([1-9][0-9]*|0[0-7]*|0x[0-9a-fA-F]+)([uU][lL]?|[lL][uU]?)?\>"
 color blue   "\<[-+]?([0-9]+\.[0-9]*|[0-9]*\.[0-9]+)([EePp][+-]?[0-9]+)?[fFlL]?"
 color blue   "\<[-+]?([0-9]+[EePp][+-]?[0-9]+)[fFlL]?"
diff --git a/js.nanorc b/js.nanorc
index 0d9cb33..d5f1d8d 100644
--- a/js.nanorc
+++ b/js.nanorc
@@ -13,6 +13,7 @@
 ## New updated taken from http://wiki.linuxhelp.net/index.php/Nano_Syntax_Highlighting
 
 syntax "JavaScript" "\.(js)$"
+comment "//"
 
 ## Default
 color white "^.+$"
diff --git a/json.nanorc b/json.nanorc
index deca0e1..1f79c18 100644
--- a/json.nanorc
+++ b/json.nanorc
@@ -1,5 +1,7 @@
 syntax "JSON" "\.json$"
 header "^\{$"
+# You can't add a comment to JSON.
+comment ""
 
 color blue   "\<[-]?[1-9][0-9]*([Ee][+-]?[0-9]+)?\>"  "\<[-]?[0](\.[0-9]+)?\>"
 color cyan  "\<null\>"
diff --git a/lua.nanorc b/lua.nanorc
index 9138a8f..dd12ef5 100644
--- a/lua.nanorc
+++ b/lua.nanorc
@@ -13,6 +13,7 @@
 
 # Automatically use for '.lua' files
 syntax "Lua" ".*\.lua$"
+comment "--"
 
 # General
 color brightwhite ".+"
diff --git a/makefile.nanorc b/makefile.nanorc
index 12db1e2..c008148 100644
--- a/makefile.nanorc
+++ b/makefile.nanorc
@@ -1,5 +1,6 @@
 syntax "Makefile" "([Mm]akefile|\.ma?k)$"
 header "^#!.*/(env +)?[bg]?make( |$)"
+comment "#"
 
 color cyan  "\<(ifeq|ifdef|ifneq|ifndef|else|endif)\>"
 color cyan  "^(export|include|override)\>"
diff --git a/man.nanorc b/man.nanorc
index 59334be..e718d5c 100644
--- a/man.nanorc
+++ b/man.nanorc
@@ -1,6 +1,8 @@
 ## Here is an example for manpages.
 ##
 syntax "Man" "\.[1-9]x?$"
+comment ".\""
+
 color green "\.(S|T)H.*$"
 color brightgreen "\.(S|T)H" "\.TP"
 color brightred "\.(BR?|I[PR]?).*$"
diff --git a/nanorc.nanorc b/nanorc.nanorc
index a224372..3eeb9a9 100644
--- a/nanorc.nanorc
+++ b/nanorc.nanorc
@@ -1,6 +1,8 @@
 ## Here is an example for nanorc files.
 ##
 syntax "Nanorc" "\.?nanorc$"
+comment "#"
+
 ## Possible errors and parameters
 icolor brightred "^[[:space:]]*((un)?set|include|syntax|i?color).*$"
 ## Colors
diff --git a/ocaml.nanorc b/ocaml.nanorc
index f5cd2c7..455fa6f 100644
--- a/ocaml.nanorc
+++ b/ocaml.nanorc
@@ -1,4 +1,8 @@
+## Syntax highlighting for OCaml.
+
 syntax "OCaml" "\.mli?$"
+comment "(*|*)"
+
 #uid
 color red "\<[A-Z][0-9a-z_]{2,}\>"
 #declarations
diff --git a/patch.nanorc b/patch.nanorc
index 7e9b16a..73e6326 100644
--- a/patch.nanorc
+++ b/patch.nanorc
@@ -1,6 +1,9 @@
 ## Here is an example for patch files.
 ##
 syntax "Patch" "\.(patch|diff)$"
+# You can't add comments in patch files.
+comment ""
+
 color brightgreen "^\+.*"
 color green "^\+\+\+.*"
 color brightblue "^ .*"
diff --git a/perl.nanorc b/perl.nanorc
index 3e629b9..88e2a1e 100644
--- a/perl.nanorc
+++ b/perl.nanorc
@@ -2,6 +2,7 @@
 ##
 syntax "Perl" "\.p[lm]$"
 header "^#!.*/(env +)?perl( |$)"
+comment "#"
 
 color red "\<(accept|alarm|atan2|bin(d|mode)|c(aller|h(dir|mod|op|own|root)|lose(dir)?|onnect|os|rypt)|d(bm(close|open)|efined|elete|ie|o|ump)|e(ach|of|val|x(ec|ists|it|p))|f(cntl|ileno|lock|ork))\>" "\<(get(c|login|peername|pgrp|ppid|priority|pwnam|(host|net|proto|serv)byname|pwuid|grgid|(host|net)byaddr|protobynumber|servbyport)|([gs]et|end)(pw|gr|host|net|proto|serv)ent|getsock(name|opt)|gmtime|goto|grep|hex|index|int|ioctl|join)\>" "\<(keys|kill|last|length|link|listen|local(time)?|log|lstat|m|mkdir|msg(ctl|get|snd|rcv)|next|oct|open(dir)?|ord|pack|pipe|pop|printf?|push|q|qq|qx|rand|re(ad(dir|link)?|cv|do|name|quire|set|turn|verse|winddir)|rindex|rmdir|s|scalar|seek(dir)?)\>" "\<(se(lect|mctl|mget|mop|nd|tpgrp|tpriority|tsockopt)|shift|shm(ctl|get|read|write)|shutdown|sin|sleep|socket(pair)?|sort|spli(ce|t)|sprintf|sqrt|srand|stat|study|substr|symlink|sys(call|read|tem|write)|tell(dir)?|time|tr(y)?|truncate|umask)\>" "\<(un(def|link|pack|shift)|utime|values|vec|wait(pid)?|wantarray|warn|write)\>"
 color magenta "\<(continue|else|elsif|do|for|foreach|if|unless|until|while|eq|ne|lt|gt|le|ge|cmp|x|my|sub|use|package|can|isa)\>"
diff --git a/php.nanorc b/php.nanorc
index ec6832e..3c0e187 100644
--- a/php.nanorc
+++ b/php.nanorc
@@ -1,5 +1,6 @@
 ## PHP Syntax Highlighting
 syntax "PHP" "\.php[2345s~]?$"
+comment "//"
 color white start="<\?(php|=)?" end="\?>"
 # Functions
 color brightblue "([a-zA-Z0-9_-]*)\("
diff --git a/po.nanorc b/po.nanorc
index d434b2a..24bc6a6 100644
--- a/po.nanorc
+++ b/po.nanorc
@@ -1,4 +1,5 @@
 syntax "PO" "\.pot?$"
+comment "#"
 
 color cyan  "\<(msgid|msgstr)\>"
 color yellow ""(\\.|[^"])*"|'(\\.|[^'])*'"
diff --git a/pov.nanorc b/pov.nanorc
index 6e71e27..5d18ee8 100644
--- a/pov.nanorc
+++ b/pov.nanorc
@@ -1,6 +1,8 @@
 ## Here is an example for POV-Ray.
 ##
 syntax "POV" "\.(pov|POV|povray|POVRAY)$"
+comment "//"
+
 color brightcyan "^[[:space:]]*#[[:space:]]*(declare)"
 color brightyellow "\<(sphere|cylinder|translate|matrix|rotate|scale)\>"
 color brightyellow "\<(orthographic|location|up|right|direction|clipped_by)\>"
diff --git a/python.nanorc b/python.nanorc
index 0517bd8..a127364 100644
--- a/python.nanorc
+++ b/python.nanorc
@@ -3,6 +3,7 @@
 syntax "python" "\.py$"
 header "^#!.*/(env +)?python[-0-9._]*( |$)"
 magic "Python script"
+comment "#"
 
 ## built-in objects
 color cyan "\<(None|self|True|False)\>"
diff --git a/ruby.nanorc b/ruby.nanorc
index ca4f3a6..d064984 100644
--- a/ruby.nanorc
+++ b/ruby.nanorc
@@ -2,6 +2,7 @@
 ##
 syntax "Ruby" "\.rb$" "Gemfile" "config.ru" "Rakefile" "Capfile" "Vagrantfile"
 header "^#!.*/(env +)?ruby( |$)"
+comment "#"
 
 ## Asciibetical list of reserved words
 color yellow "\<(BEGIN|END|alias|and|begin|break|case|class|def|defined\?|do|else|elsif|end|ensure|false|for|if|in|module|next|nil|not|or|redo|rescue|retry|return|self|super|then|true|undef|unless|until|when|while|yield)\>"
diff --git a/rust.nanorc b/rust.nanorc
index f776b64..a7b139b 100644
--- a/rust.nanorc
+++ b/rust.nanorc
@@ -2,7 +2,10 @@
 # Copyright 2015 The Rust Project Developers.
 #
 # NOTE: Rules are applied in order: later rules re-colorize matching text.
+
+
 syntax "Rust" "\.rs"
+comment "//"
 
 # function definition
 color magenta "fn [a-z0-9_]+"
diff --git a/sh.nanorc b/sh.nanorc
index 4eeb07d..3b27e18 100644
--- a/sh.nanorc
+++ b/sh.nanorc
@@ -2,6 +2,8 @@
 ##
 syntax "SH" "\.sh$" "\.bashrc" "bashrc" "\.bash_aliases" "bash_aliases" "\.bash_functions" "bash_functions" "\.bash_login" "\.bash_logout" "\.bash_profile" "bash_profile" "\.profile" "revise\..+$"
 header "^#!.*/(env +)?(ba)?sh( |$)"
+comment "#"
+
 ## keywords:
 color green "\<(case|do|done|elif|else|esac|fi|for|function|if|in|select|then|time|until|while)\>"
 color green "(\{|\}|\(|\)|\;|\]|\[|`|\\|\$|<|>|!|=|&|\|)"
diff --git a/tcl.nanorc b/tcl.nanorc
index 7829cb0..e08ff6a 100644
--- a/tcl.nanorc
+++ b/tcl.nanorc
@@ -1,6 +1,8 @@
 syntax "TCL" "\.tcl$"
 header "^#!.*/(env +)?tclsh( |$)"
 
+comment "#"
+
 ## Standard Tcl [info commands]
 color cyan "\<(after|append|array|auto_execok|auto_import|auto_load|auto_load_index|auto_qualify|binary|break|case|catch|cd|clock|close|concat|continue|else|encoding|eof|error|eval|exec|exit|expr|fblocked|fconfigure|fcopy|file|fileevent|flush|for|foreach|format|gets|glob|global|history|if|incr|info|interp|join|lappend|lindex|linsert|list|llength|load|lrange|lreplace|lsearch|lset|lsort|namespace|open|package|pid|puts|pwd|read|regexp|regsub|rename|return|scan|seek|set|socket|source|split|string|subst|switch|tclLog|tell|time|trace|unknown|unset|update|uplevel|upvar|variable|vwait|while)\>"
 ## Basic Tcl sub commands
diff --git a/tex.nanorc b/tex.nanorc
index b768ed1..208f9af 100644
--- a/tex.nanorc
+++ b/tex.nanorc
@@ -1,6 +1,8 @@
 ## Here is a short example for TeX files.
 ##
 syntax "TeX" "\.tex$" "bib" "\.bib$" "cls" "\.cls$"
+comment "%"
+
 color yellow "\$(\\\$|[^$])*[^\\]\$"
 color yellow "\$\$(\\\$|[^$])*[^\\]\$\$"
 icolor green "\\.|\\[A-Z]*"
diff --git a/xml.nanorc b/xml.nanorc
index 8ad5a32..1ebe934 100644
--- a/xml.nanorc
+++ b/xml.nanorc
@@ -2,6 +2,7 @@
 ##
 
 syntax "XML" ".*\.([jrs]?html?|xml|sgml?|rng)$"
+comment "<!--|-->"
 color white "^.+$"
 color green  start="<" end=">"
 color cyan   "<[^> ]+"