vim-patch:9.0.1626: Visual area not shown when using 'showbreak' (#23978)

Problem:    Visual area not shown when using 'showbreak' and start of line is
            not visible. (Jaehwang Jung)
Solution:   Adjust "fromcol" for the space taken by 'showbreak'.
            (closes vim/vim#12514)

https://github.com/vim/vim/commit/f578ca2c8f36b61ac3301fe8b59a8473c964cdc2

Co-authored-by: Bram Moolenaar <Bram@vim.org>

1 files changed, 122 insertions, 0 deletions

diff --git a/test/functional/legacy/highlight_spec.lua b/test/functional/legacy/highlight_spec.lua
new file mode 100644
index 0000000000..0a130f1607
--- /dev/null
+++ b/test/functional/legacy/highlight_spec.lua
@@ -0,0 +1,122 @@
+local Screen = require('test.functional.ui.screen')
+local helpers = require('test.functional.helpers')(after_each)
+local clear, feed = helpers.clear, helpers.feed
+local expect = helpers.expect
+local eq = helpers.eq
+local poke_eventloop = helpers.poke_eventloop
+local exc_exec = helpers.exc_exec
+local feed_command = helpers.feed_command
+local exec = helpers.exec
+
+before_each(clear)
+
+describe(':highlight', function()
+  it('is working', function()
+    local screen = Screen.new(35, 10)
+    screen:attach()
+    -- Basic test if ":highlight" doesn't crash
+    feed_command('set more')
+    feed(':highlight<CR>')
+    -- FIXME(tarruda): We need to be sure the prompt is displayed before
+    -- continuing, or risk a race condition where some of the following input
+    -- is discarded resulting in test failure
+    screen:expect([[
+      :highlight                         |
+      SpecialKey     xxx ctermfg=4       |
+                         guifg=Blue      |
+      EndOfBuffer    xxx links to NonText|
+                                         |
+      TermCursor     xxx cterm=reverse   |
+                         gui=reverse     |
+      TermCursorNC   xxx cleared         |
+      NonText        xxx ctermfg=12      |
+      -- More --^                         |
+    ]])
+    feed('q')
+    poke_eventloop() -- wait until we're back to normal
+    feed_command('hi Search')
+    feed_command('hi Normal')
+
+    -- Test setting colors.
+    -- Test clearing one color and all doesn't generate error or warning
+    feed_command('hi NewGroup cterm=italic ctermfg=DarkBlue ctermbg=Grey gui=NONE guifg=#00ff00 guibg=Cyan')
+    feed_command('hi Group2 cterm=NONE')
+    feed_command('hi Group3 cterm=bold')
+    feed_command('redir! @a')
+    feed_command('hi NewGroup')
+    feed_command('hi Group2')
+    feed_command('hi Group3')
+    feed_command('hi clear NewGroup')
+    feed_command('hi NewGroup')
+    feed_command('hi Group2')
+    feed_command('hi Group2 NONE')
+    feed_command('hi Group2')
+    feed_command('hi clear')
+    feed_command('hi Group3')
+    feed('<cr>')
+    eq('Vim(highlight):E475: Invalid argument: cterm=\'asdf',
+       exc_exec([[hi Crash cterm='asdf]]))
+    feed_command('redir END')
+
+    -- Filter ctermfg and ctermbg, the numbers depend on the terminal
+    feed_command('0put a')
+    feed_command([[%s/ctermfg=\d*/ctermfg=2/]])
+    feed_command([[%s/ctermbg=\d*/ctermbg=3/]])
+
+    -- Fix the fileformat
+    feed_command('set ff&')
+    feed_command('$d')
+
+    -- Assert buffer contents.
+    expect([[
+
+
+      NewGroup       xxx cterm=italic
+                         ctermfg=2
+                         ctermbg=3
+                         guifg=#00ff00
+                         guibg=Cyan
+
+      Group2         xxx cleared
+
+      Group3         xxx cterm=bold
+
+
+      NewGroup       xxx cleared
+
+      Group2         xxx cleared
+
+
+      Group2         xxx cleared
+
+
+      Group3         xxx cleared]])
+  end)
+end)
+
+describe('Visual selection highlight', function()
+  -- oldtest: Test_visual_sbr()
+  it("when 'showbreak' is set", function()
+    local screen = Screen.new(60, 6)
+    screen:set_default_attr_ids({
+      [0] = {bold = true, foreground = Screen.colors.Blue},  -- NonText
+      [1] = {background = Screen.colors.LightGrey},  -- Visual
+      [2] = {bold = true},  -- ModeMsg
+    })
+    screen:attach()
+    exec([[
+      set showbreak=>
+      call setline(1, 'Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.')
+      exe "normal! z1\<CR>"
+    ]])
+    feed('v$')
+    screen:expect([[
+      {0:>}{1:n, no sea takimata sanctus est Lorem ipsum dolor sit amet.}^ |
+                                                                  |
+                                                                  |
+                                                                  |
+                                                                  |
+      {2:-- VISUAL --}                                                |
+    ]])
+  end)
+end)