fix(lsp): handle using array as open_floating_preview title (#33016)

1 files changed, 9 insertions, 3 deletions

diff --git a/runtime/lua/vim/lsp/util.lua b/runtime/lua/vim/lsp/util.lua
index d8a6a70ccd..a069225e37 100644
--- a/runtime/lua/vim/lsp/util.lua
+++ b/runtime/lua/vim/lsp/util.lua
@@ -1411,10 +1411,16 @@ function M._make_floating_popup_size(contents, opts)
   width = math.min(width, screen_width - border_width)
 
   -- Make sure that the width is large enough to fit the title.
-  if opts.title then
-    width = math.max(width, vim.fn.strdisplaywidth(opts.title))
+  local title_length = 0
+  local chunks = type(opts.title) == 'string' and { { opts.title } } or opts.title or {}
+  for _, chunk in
+    ipairs(chunks --[=[@as [string, string][]]=])
+  do
+    title_length = title_length + vim.fn.strdisplaywidth(chunk[1])
   end
 
+  width = math.max(width, title_length)
+
   if wrap_at then
     wrap_at = math.min(wrap_at, width)
   end
@@ -1490,7 +1496,7 @@ end
 --- @field offset_y? integer
 --- @field border? string|(string|[string,string])[] override `border`
 --- @field zindex? integer override `zindex`, defaults to 50
---- @field title? string
+--- @field title? string|[string,string][]
 --- @field title_pos? 'left'|'center'|'right'
 ---
 --- (default: `'cursor'`)