diff --git a/docs/hilbish.txt b/docs/hilbish.txt
index 2b0f3af..d843b40 100644
--- a/docs/hilbish.txt
+++ b/docs/hilbish.txt
@@ -16,7 +16,11 @@ exec(cmd) > Replaces running hilbish with `cmd`
 
 goro(fn) > Puts `fn` in a goroutine
 
- > 
+highlighter(cb) > Sets the highlighter function. This is mainly for syntax hightlighting, but in
+reality could set the input of the prompt to display anything. The callback
+is passed the current line as typed and is expected to return a line that will
+be used to display in the line.
+
 hinter(cb) > Sets the hinter function. This will be called on every key insert to determine
 what text to use as an inline hint. The callback is passed 2 arguments:
 the current line and the position. It is expected to return a string
diff --git a/emmyLuaDocs/hilbish.lua b/emmyLuaDocs/hilbish.lua
index 4ed3c64..9b0c263 100644
--- a/emmyLuaDocs/hilbish.lua
+++ b/emmyLuaDocs/hilbish.lua
@@ -33,8 +33,12 @@ function hilbish.exec(cmd) end
 --- @param fn function
 function hilbish.goro(fn) end
 
---- 
-function hilbish.highlighter() end
+--- Sets the highlighter function. This is mainly for syntax hightlighting, but in
+--- reality could set the input of the prompt to display anything. The callback
+--- is passed the current line as typed and is expected to return a line that will
+--- be used to display in the line.
+--- @param cb function
+function hilbish.highlighter(cb) end
 
 --- Sets the hinter function. This will be called on every key insert to determine
 --- what text to use as an inline hint. The callback is passed 2 arguments: