enh(sh): Apply to PKGBUILD files

Originally proposed in scopatz#364

Author: davidhcefx

sh.nanorc

@@ -1,11 +1,12 @@
 ## Here is an example for Bourne shell scripts.
 ##
-syntax "SH" "\.sh$" "\.ash$" "\.bashrc$" "bashrc$" "\.bash_aliases$" "bash_aliases$" "\.bash_functions$" "bash_functions$" "\.bash_login$" "\.bash_logout$" "\.bash_profile$" "bash_profile$" "\.profile$" "revise\..+$"
+syntax "SH" "\.sh$" "\.ash$" "\.bashrc$" "bashrc$" "\.bash_aliases$" "bash_aliases$" "\.bash_functions$" "bash_functions$" "\.bash_login$" "\.bash_logout$" "\.bash_profile$" "bash_profile$" "\.profile$" "revise\..+$" "^PKGBUILD$"
 header "^#!.*/(env +)?(ba|da|a)?sh( |$)"
 magic "(POSIX|Bourne-Again) shell script.*text"
 comment "#"
 
 linter dash -n
+#linter shellcheck --format=gcc
 
 ## keywords:
 color green "\<(case|do|done|elif|else|esac|fi|for|function|if|in|select|then|time|until|while)\>"