feat(pick): make key query process respect the 'iminsert' option

lua/mini/pick.lua

@@ -2730,7 +2730,7 @@ H.actions = {
 
 H.picker_query_add = function(picker, char)
   -- Determine if it **is** proper single character
-  if vim.fn.strchars(char) > 1 or vim.fn.char2nr(char) <= 31 then return end
+  if not H.is_single_character(char) then return end
   table.insert(picker.query, picker.caret, char)
   picker.caret = picker.caret + 1
   H.querytick = H.querytick + 1
@@ -2741,6 +2741,8 @@ H.picker_query_add = function(picker, char)
   if should_reset then picker.match_inds = H.seq_along(picker.items) end
 end
 
+H.is_single_character = function(char) return not (vim.fn.strchars(char) > 1 or vim.fn.char2nr(char) <= 31) end
+
 H.picker_query_delete = function(picker, n)
   local delete_to_left = n > 0
   local left = delete_to_left and math.max(picker.caret - n, 1) or picker.caret
@@ -3683,10 +3685,19 @@ end
 H.islist = vim.fn.has('nvim-0.10') == 1 and vim.islist or vim.tbl_islist
 
 H.get_lmap = function()
-  if vim.o.keymap == '' then return {} end
   local lmap = {}
   for _, map in ipairs(vim.fn.maplist()) do
-    if map.mode == 'l' then lmap[map.lhs] = map.rhs end
+    if map.mode == 'l' then
+      if H.is_single_character(map.lhs) and H.is_single_character(map.rhs) then
+        lmap[map.lhs] = map.rhs
+      else
+        -- notify_once specifically to avoid duplicate messages
+        vim.notify_once(
+          '(mini.pick) Skipped `lmap` mappings that are not proper single characters',
+          vim.log.levels.WARN
+        )
+      end
+    end
   end
   return lmap
 end