fix #863

Author: sumneko

changelog.md

@@ -2,6 +2,7 @@
 
 ## 2.5.6
 * `CHG` diagnostic: now syntax errors in `LuaDoc` are shown as `Warning`
+* `FIX` [#863](https://github.com/sumneko/lua-language-server/issues/863)
 * `FIX` return type of `math.floor`
 * `FIX` runtime errors
 

script/parser/guide.lua

@@ -781,7 +781,7 @@ function m.offsetToPositionByLines(lines, offset)
         row = (left + right) // 2
         if row == left then
             if right ~= left then
-                if lines[right] <= offset then
+                if lines[right] - 1 <= offset then
                     row = right
                 end
             end

script/parser/newparser.lua

@@ -537,7 +537,7 @@ local function skipComment(isAction)
         State.comms[#State.comms+1] = {
             type   = chead and 'comment.cshort' or 'comment.short',
             start  = left,
-            finish = getPosition(Tokens[Index], 'right'),
+            finish = lastRightPosition(),
             text   = ssub(Lua, start + 2, Tokens[Index] and (Tokens[Index] - 1) or #Lua),
         }
         return true