fix(global): disable multiprocess for function contents

Closes #2346

Author: ibhagwan

lua/fzf-lua/shell.lua

@@ -259,7 +259,7 @@ M.stringify_mt = function(contents, opts)
     -- command does not require any processing
     return contents
     -- don't use mt for non-string contents unless explictly set truthy multiprocess
-  elseif not opts.multiprocess and type(opts.cmd) ~= "string" then
+  elseif opts.multiprocess ~= true and type(contents) ~= "string" then
     return nil
   else
     opts.contents = contents
@@ -518,7 +518,7 @@ M.wrap_spawn_stdio = function(opts)
   local is_win = utils.__IS_WINDOWS
   local nvim_bin = os.getenv("FZF_LUA_NVIM_BIN") or vim.v.progpath
   -- TODO: should we check "cmd"?
-  for _, k in ipairs({ "fn_transform", "fn_preprocess", "fn_postprocess" }) do
+  for _, k in ipairs({ "contents", "fn_transform", "fn_preprocess", "fn_postprocess" }) do
     if type(opts[k]) == "function" then
       -- opts[k] = M.check_upvalue(opts[k], "opts." .. k)
       M.check_upvalue(opts[k], "opts." .. k)

tests/api_spec.lua

@@ -19,7 +19,7 @@ T["api"]["fzf_exec"]["table"] = function(multiprocess)
     end
   end
   helpers.FzfLua.fzf_exec(child, contents,
-    { __expect_lines = true, __postprocess_wait = true, multiprocess = multiprocess })
+    { __expect_lines = true, __postprocess_wait = true, multiprocess = multiprocess == true })
 end
 
 T["api"]["fzf_exec"]["function"] = new_set({ parametrize = { { "sync" }, { "async" } } }, {
@@ -109,7 +109,7 @@ T["api"]["fzf_live"]["table"] = function(multiprocess)
       __expect_lines = true,
       __postprocess_wait = true,
       query = 100,
-      multiprocess = multiprocess,
+      multiprocess = multiprocess == true,
     })
 end
 
@@ -135,7 +135,7 @@ T["api"]["fzf_live"]["function"] = new_set({ parametrize = { { "sync" }, { "asyn
           __expect_lines = true,
           __postprocess_wait = true,
           query = 100,
-          multiprocess = multiprocess,
+          multiprocess = multiprocess == true,
         })
     else
       helpers.FzfLua.fzf_live(child, function(args)