fix(flexible_components): better checking of maximum available space

lua/heirline/init.lua

@@ -72,8 +72,9 @@ local function _eval(statusline, full_width)
     if buflist then
         out = statusline:traverse() -- this is now the tabline, after expansion/contraction
         -- the space to render the buflist is "columns - (all_minus_fullwidthbuflist)"
-        buflist._maxwidth = vim.o.columns - (utils.count_chars(out) - utils.count_chars(buflist:traverse()))
-        utils.page_buflist(buflist)
+        local maxwidth = (full_width and vim.o.columns) or vim.api.nvim_win_get_width(0)
+        maxwidth = maxwidth - (utils.count_chars(out) - utils.count_chars(buflist:traverse()))
+        utils.page_buflist(buflist, maxwidth)
         out = statusline:traverse()
 
         -- now the buflist is paged, and flexible components still have the same value, however, there might be more space now, depending on the page

lua/heirline/utils.lua

@@ -201,12 +201,7 @@ function M.expand_or_contract_flexible_components(flexible_components, full_widt
         return
     end
 
-    local winw
-    if full_width then
-        winw = vim.o.columns
-    else
-        winw = vim.api.nvim_win_get_width(0)
-    end
+    local winw = (full_width and vim.o.columns) or vim.api.nvim_win_get_width(0)
 
     local stl_len = M.count_chars(out)
 
@@ -434,13 +429,12 @@ end
 
 --- Private function
 ---@param buflist table
-function M.page_buflist(buflist)
+function M.page_buflist(buflist, maxwidth)
     if not buflist or #buflist == 0 then
         return
     end
 
     local tbl = {}
-    local maxwidth = buflist._maxwidth or vim.o.columns
     maxwidth = maxwidth - 2 -- leave some space for {right,left}_trunc
 
     local pages = {}