Add header-comment as an option

Author: Olical

README.md

@@ -71,6 +71,11 @@ fine!) will default to these values that should work fine for most people.
  ;; the plugin itself and checking that it's running when you expect it to.
  :verbose false
 
+ ;; When false, will not write the protective `-- [nfnl] Compiled from ...` header to the resulting .lua files.
+ ;; It will also prevent nfnl from checking for this header before overwriting .lua files.
+ ;; Intended for users who wish to write shebang comments at the top of their .lua for easier execution.
+ :header-comment true
+
  ;; Passed to fennel.compileString when your code is compiled.
  ;; See https://fennel-lang.org/api for more information.
  :compiler-options {;; Disables ansi escape sequences in compiler output.

fnl/nfnl/compile.fnl

@@ -73,7 +73,10 @@
               (notify.info "Successfully compiled: " path))
             {:status :ok
              :source-path path
-             :result (.. (with-header rel-file-name res) "\n")})
+             :result (.. (if (cfg [:header-comment])
+                           (with-header rel-file-name res)
+                           res)
+                         "\n")})
           (do
             (when (not batch?)
               (notify.error res))
@@ -90,7 +93,8 @@
       (not= :ok status)
       res
 
-      (safe-target? destination-path)
+      (or (safe-target? destination-path)
+          (not (cfg [:header-comment])))
       (do
         (fs.mkdirp (fs.basename destination-path))
         (core.spit destination-path result)

fnl/nfnl/config.fnl

@@ -63,6 +63,7 @@
                 :base-dirs [root-dir]})]
 
     {:verbose false
+     :header-comment true
      :compiler-options {:error-pinpoint false}
 
      :root-dir root-dir