Fix newline finding

src/parser/parser_types.nim

@@ -361,10 +361,10 @@ func highlightStreamPosition2(stream: string, position: int): string =
 
   let (lineStartPosition, lineEndPosition) =
     case ch:
-      # of '\n':
-      #   let lineStartPosition = (position - 1).max(0)
-      #   let lineEndPosition = (position).min(stream.len - 1)
-      #   (lineStartPosition, lineEndPosition)
+      of '\n':
+        let lineStartPosition = (position - 1).max(0)
+        let lineEndPosition = (position + 1).min(stream.len - 1)
+        (lineStartPosition, lineEndPosition)
       else:
         (position, position)
 
@@ -452,16 +452,22 @@ proc `$`*(x: ParserError): string =
     else: "ParseError"
 
 when isMainModule:
-  let test1 = """AB
+  let test1 = """ABC
+
+D
+
+EFG"""
+  # echo test1.highlightStreamPosition2(test1.find("B"))
+  # echo "=============="
+  # echo test1.highlightStreamPosition2(test1.find("C"))
+  # echo "=============="
+  # echo test1.highlightStreamPosition2(test1.find("D"))
+
+
+  echo test1.highlightStreamPosition2(test1.find("\n"))
+  echo test1.highlightStreamPosition2(test1.find("\n", test1.find("\n") + 1))
 
-C
 
-D"""
-  echo test1.highlightStreamPosition2(test1.find("B"))
-  echo "=============="
-  echo test1.highlightStreamPosition2(test1.find("C"))
-  echo "=============="
-  echo test1.highlightStreamPosition2(test1.find("D"))
   # echo "\n1\n".rfind('\n', 0, 2)
 
   # block highlightStreamPosition: