fix first semantic token is dropped

fix #2081

Author: sumneko

changelog.md

@@ -4,9 +4,11 @@
 * `FIX` commandline parameter `checklevel` may not work
 * `FIX` [#2036]
 * `FIX` [#2037]
+* `FIX` [#2081]
 
 [#2036]: https://github.com/LuaLS/lua-language-server/issues/2036
 [#2037]: https://github.com/LuaLS/lua-language-server/issues/2037
+[#2081]: https://github.com/LuaLS/lua-language-server/issues/2081
 
 ## 3.6.18
 `2023-3-23`

script/core/semantic-tokens.lua

@@ -711,7 +711,7 @@ local function buildTokens(state, results)
     local lastLine = 0
     local lastStartChar = 0
     local index = 0
-    for _, source in ipairs(results) do
+    for i, source in ipairs(results) do
         local startPos  = source.start
         local finishPos = source.finish
         local line      = startPos.line
@@ -720,7 +720,7 @@ local function buildTokens(state, results)
         local deltaStartChar
         if deltaLine == 0 then
             deltaStartChar = startChar - lastStartChar
-            if deltaStartChar == 0 then
+            if deltaStartChar == 0 and i > 1 then
                 goto continue
             end
         else