test: use termopen() instead of :terminal more (#26462)

test/functional/api/buffer_updates_spec.lua

@@ -1,6 +1,7 @@
 local helpers = require('test.functional.helpers')(after_each)
 local clear = helpers.clear
 local eq, ok = helpers.eq, helpers.ok
+local funcs = helpers.funcs
 local buffer, command, eval, nvim, next_msg = helpers.buffer,
   helpers.command, helpers.eval, helpers.nvim, helpers.next_msg
 local nvim_prog = helpers.nvim_prog
@@ -832,7 +833,10 @@ describe('API: buffer events:', function()
   it('when :terminal lines change', function()
     local buffer_lines = {}
     local expected_lines = {}
-    command('terminal "'..nvim_prog..'" -u NONE -i NONE -n -c "set shortmess+=A"')
+    funcs.termopen({ nvim_prog, '-u', 'NONE', '-i', 'NONE', '-n', '-c', 'set shortmess+=A' }, {
+      env = { VIMRUNTIME = os.getenv('VIMRUNTIME') }
+    })
+
     local b = nvim('get_current_buf')
     ok(buffer('attach', b, true, {}))
 

test/functional/api/vim_spec.lua

@@ -2396,7 +2396,11 @@ describe('API', function()
       eq(info, meths.get_chan_info(3))
 
       -- :terminal with args + running process.
-      command(':exe "terminal" shellescape(v:progpath) "-u NONE -i NONE"')
+      command('enew')
+      local progpath_esc = eval('shellescape(v:progpath)')
+      funcs.termopen(('%s -u NONE -i NONE'):format(progpath_esc), {
+        env = { VIMRUNTIME = os.getenv('VIMRUNTIME') }
+      })
       eq(-1, eval('jobwait([&channel], 0)[0]'))  -- Running?
       local expected2 = {
         stream = 'job',
@@ -2406,11 +2410,11 @@ describe('API', function()
             eval('&shell'),
             '/s',
             '/c',
-            fmt('"%s -u NONE -i NONE"', eval('shellescape(v:progpath)')),
+            fmt('"%s -u NONE -i NONE"', progpath_esc),
           } or {
             eval('&shell'),
             eval('&shellcmdflag'),
-            fmt('%s -u NONE -i NONE', eval('shellescape(v:progpath)')),
+            fmt('%s -u NONE -i NONE', progpath_esc),
           }
         ),
         mode = 'terminal',

test/functional/autocmd/autocmd_oldtest_spec.lua

@@ -75,7 +75,7 @@ describe('oldtests', function()
     funcs.writefile(funcs.split(content, "\n"), fname)
 
     funcs.delete('Xout')
-    funcs.system(string.format('%s -u NORC -i NONE -N -S %s', meths.get_vvar('progpath'), fname))
+    funcs.system(string.format('%s --clean -N -S %s', meths.get_vvar('progpath'), fname))
     eq(1, funcs.filereadable('Xout'))
 
     funcs.delete('Xxx1')

test/functional/core/job_spec.lua

@@ -1162,11 +1162,12 @@ describe("pty process teardown", function()
   it("does not prevent/delay exit. #4798 #4900", function()
     skip(is_os('win'))
     -- Use a nested nvim (in :term) to test without --headless.
-    feed_command(":terminal '"..helpers.nvim_prog
+    funcs.termopen({
-      .."' -u NONE -i NONE --cmd '"..nvim_set.."' "
+      helpers.nvim_prog, '-u', 'NONE', '-i', "NONE", '--cmd', nvim_set,
       -- Use :term again in the _nested_ nvim to get a PTY process.
       -- Use `sleep` to simulate a long-running child of the PTY.
-      .."+terminal +'!(sleep 300 &)' +qa")
+      '+terminal', '+!(sleep 300 &)', '+qa',
+    }, { env = { VIMRUNTIME = os.getenv('VIMRUNTIME') } })
 
     -- Exiting should terminate all descendants (PTY, its children, ...).
     screen:expect([[

test/functional/core/main_spec.lua

@@ -68,7 +68,9 @@ describe('command-line option', function()
 
       -- Need to explicitly pipe to stdin so that the embedded Nvim instance doesn't try to read
       -- data from the terminal #18181
-      funcs.termopen(string.format([[echo "" | %s]], table.concat(args, " ")))
+      funcs.termopen(string.format([[echo "" | %s]], table.concat(args, " ")), {
+        env = { VIMRUNTIME = os.getenv('VIMRUNTIME') }
+      })
       screen:expect([[
         {1:^                                        }|
         {2:~                                       }|

test/functional/ex_cmds/swapfile_preserve_recover_spec.lua

@@ -115,7 +115,9 @@ describe("preserve and (R)ecover with custom 'directory'", function()
     local screen0 = Screen.new()
     screen0:attach()
     local child_server = new_pipename()
-    funcs.termopen({nvim_prog, '-u', 'NONE', '-i', 'NONE', '--listen', child_server})
+    funcs.termopen({ nvim_prog, '-u', 'NONE', '-i', 'NONE', '--listen', child_server }, {
+      env = { VIMRUNTIME = os.getenv('VIMRUNTIME') }
+    })
     screen0:expect({any = pesc('[No Name]')})  -- Wait for the child process to start.
     local child_session = helpers.connect(child_server)
     set_session(child_session)
@@ -452,7 +454,9 @@ describe('quitting swapfile dialog on startup stops TUI properly', function()
   it('(Q)uit at first file argument', function()
     local chan = funcs.termopen({nvim_prog, '-u', 'NONE', '-i', 'NONE',
                                  '--cmd', init_dir, '--cmd', init_set,
-                                 testfile})
+                                 testfile}, {
+                                   env = { VIMRUNTIME = os.getenv('VIMRUNTIME') }
+                                 })
     retry(nil, nil, function()
       eq('[O]pen Read-Only, (E)dit anyway, (R)ecover, (D)elete it, (Q)uit, (A)bort:',
          eval("getline('$')->trim(' ', 2)"))
@@ -467,7 +471,9 @@ describe('quitting swapfile dialog on startup stops TUI properly', function()
   it('(A)bort at second file argument with -p', function()
     local chan = funcs.termopen({nvim_prog, '-u', 'NONE', '-i', 'NONE',
                                  '--cmd', init_dir, '--cmd', init_set,
-                                 '-p', otherfile, testfile})
+                                 '-p', otherfile, testfile}, {
+                                   env = { VIMRUNTIME = os.getenv('VIMRUNTIME') }
+                                 })
     retry(nil, nil, function()
       eq('[O]pen Read-Only, (E)dit anyway, (R)ecover, (D)elete it, (Q)uit, (A)bort:',
          eval("getline('$')->trim(' ', 2)"))
@@ -487,7 +493,9 @@ describe('quitting swapfile dialog on startup stops TUI properly', function()
       third	%s	/^  \zsthird$/]]):format(testfile, testfile, testfile))
     local chan = funcs.termopen({nvim_prog, '-u', 'NONE', '-i', 'NONE',
                                  '--cmd', init_dir, '--cmd', init_set,
-                                 '--cmd', 'set tags='..otherfile, '-tsecond'})
+                                 '--cmd', 'set tags='..otherfile, '-tsecond'}, {
+                                   env = { VIMRUNTIME = os.getenv('VIMRUNTIME') }
+                                 })
     retry(nil, nil, function()
       eq('[O]pen Read-Only, (E)dit anyway, (R)ecover, (D)elete it, (Q)uit, (A)bort:',
          eval("getline('$')->trim(' ', 2)"))

test/functional/lua/ui_event_spec.lua

@@ -101,7 +101,7 @@ describe('vim.ui_attach', function()
   end)
 
   it('does not crash on exit', function()
-    helpers.funcs.system({
+    funcs.system({
       helpers.nvim_prog,
       '-u', 'NONE',
       '-i', 'NONE',