Merge pull request #17067 from neovim/backport-17046-to-release-0.6

[Backport release-0.6] fix(keywordprg): retain terminal buffer after K

src/nvim/normal.c

@@ -5173,11 +5173,7 @@ static void nv_ident(cmdarg_T *cap)
       // Start insert mode in terminal buffer
       restart_edit = 'i';
 
-      add_map((char_u *)"<buffer> <esc> <Cmd>call jobstop(&channel)<CR>", TERM_FOCUS, true);
-      do_cmdline_cmd("autocmd TermClose <buffer> "
-                     " if !v:event.status |"
-                     "   exec 'bdelete! ' .. expand('<abuf>') |"
-                     " endif");
+      add_map((char_u *)"<buffer> <esc> <Cmd>bdelete!<CR>", TERM_FOCUS, true);
     }
   }
 

test/functional/editor/K_spec.lua

@@ -33,6 +33,29 @@ describe('K', function()
     feed('i'..test_file..'<ESC>K')
     retry(nil, nil, function() eq(1, eval('filereadable("'..test_file..'")')) end)
     eq({'fnord'}, eval("readfile('"..test_file.."')"))
+    -- Confirm that Neovim is still in terminal mode after K is pressed (#16692).
+    helpers.sleep(500)
+    eq('t', eval('mode()'))
+    feed('<space>')  -- Any key, not just <space>, can be used here to escape.
+    eq('n', eval('mode()'))
+  end)
+
+  it("<esc> kills the buffer for a running 'keywordprg' command", function()
+    helpers.source('set keywordprg=less')
+    eval('writefile(["hello", "world"], "' .. test_file .. '")')
+    feed('i' .. test_file .. '<esc>K')
+    eq('t', eval('mode()'))
+    -- Confirm that an arbitrary keypress doesn't escape (i.e., the process is
+    -- still running). If the process were no longer running, an arbitrary
+    -- keypress would escape.
+    helpers.sleep(500)
+    feed('<space>')
+    eq('t', eval('mode()'))
+    -- Confirm that <esc> kills the buffer for the running command.
+    local bufnr = eval('bufnr()')
+    feed('<esc>')
+    eq('n', eval('mode()'))
+    helpers.neq(bufnr, eval('bufnr()'))
   end)
 
 end)