diff --git a/fish.nanorc b/fish.nanorc
index 85fa258..081ee9a 100644
--- a/fish.nanorc
+++ b/fish.nanorc
@@ -1,6 +1,7 @@
 ## Here is an example for Fish shell scripts.
 ##
 syntax "Fish" "\.fish$"
+header "^#!.*/(env +)?fish( |$)"
 icolor brightgreen "^[0-9A-Z_]+\(\)"
 color green "\<(alias|begin|break|case|continue|contains|else|end|for|function|if|math|return|set|switch|test|while)\>"
 color green "(\{|\}|\(|\)|\;|\]|\[|`|\\|\$|<|>|!|=|&|\|)"
diff --git a/html.nanorc b/html.nanorc
index 4f225d8..77a04dd 100644
--- a/html.nanorc
+++ b/html.nanorc
@@ -1,6 +1,6 @@
 ## HTML syntax highlighting rules for Nano
 
-syntax "HTML" "\.html?(.j2)?$"
+syntax "HTML" "\.html?(.j2)?(.twig)?$"
 magic "HTML document"
 comment "<!--|-->"
 
diff --git a/sh.nanorc b/sh.nanorc
index 4eeb07d..0fe1cb2 100644
--- a/sh.nanorc
+++ b/sh.nanorc
@@ -1,7 +1,7 @@
 ## Here is an example for Bourne shell scripts.
 ##
-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( |$)"
+syntax "SH" "\.sh$" "\.ash" "\.bashrc" "bashrc" "\.bash_aliases" "bash_aliases" "\.bash_functions" "bash_functions" "\.bash_login" "\.bash_logout" "\.bash_profile" "bash_profile" "\.profile" "revise\..+$"
+header "^#!.*/(env +)?(ba|da|a)?sh( |$)"
 ## keywords:
 color green "\<(case|do|done|elif|else|esac|fi|for|function|if|in|select|then|time|until|while)\>"
 color green "(\{|\}|\(|\)|\;|\]|\[|`|\\|\$|<|>|!|=|&|\|)"
diff --git a/twig.nanorc b/twig.nanorc
new file mode 120000
index 0000000..c18f7cb
--- /dev/null
+++ b/twig.nanorc
@@ -0,0 +1 @@
+html.nanorc
\ No newline at end of file
diff --git a/xml.nanorc b/xml.nanorc
index 8ad5a32..005032a 100644
--- a/xml.nanorc
+++ b/xml.nanorc
@@ -1,7 +1,7 @@
 ## Here is an example for xml files.
 ##
 
-syntax "XML" ".*\.([jrs]?html?|xml|sgml?|rng)$"
+syntax "XML" ".*\.([jrs]?html?|xml|sgml?|rng|mei|musicxml)$"
 color white "^.+$"
 color green  start="<" end=">"
 color cyan   "<[^> ]+"