fix wrong tablen with above virtual text

src/charset.c

@@ -1179,6 +1179,9 @@ win_lbr_chartabsize(
  int col = (int)(s - line);
  garray_T *gap = &wp->w_buffer->b_textprop_text;
 
+ if (*s == TAB)
+ size = wp->w_buffer->b_p_ts;
+
  // The "$" for 'list' mode will go between the EOL and
  // the text prop, account for that.
  if (has_lcs_eol)

src/drawline.c

@@ -3113,6 +3113,10 @@ win_line(
  {
  int tab_len = 0;
  long vcol_adjusted = wlv.vcol; // removed showbreak len
+#ifdef FEAT_PROP_POPUP
+ if (wlv.text_prop_above_count > 0)
+ vcol_adjusted = 0;
+#endif
 #ifdef FEAT_LINEBREAK
  char_u *sbr = get_showbreak_value(wp);
 

src/testdir/dumps/Test_prop_above_tablen_1.dump

@@ -0,0 +1,8 @@
+| +0&#ffffff0@15|a+0#4040ff13&|b|o|v|e| |1| +0#0000000&@10
+@16|a+0#4040ff13&|b|o|v|e| |2| +0#0000000&@10
+@7> @8|o|n|e| @14
+@8|a+0#4040ff13&|b|o|v|e| |1| +0#0000000&@18
+@8|t|w|o| @22
+|~+0#4040ff13&| @32
+|~| @32
+| +0#0000000&@16|1|,|1|-|7|6| @6|A|l@1| 

src/testdir/test_textprop.vim

@@ -3547,6 +3547,38 @@ func Test_prop_above_with_indent()
  call prop_type_delete('indented')
 endfunc
 
+func Test_prop_above_tablen()
+ CheckRunVimInTerminal
+
+ let lines =<< trim END
+ vim9script
+ setline(1, ["\t\tone", "\ttwo"])
+ prop_type_add('above', {highlight: 'NonText'})
+ prop_add(1, 0, {
+ text: 'above 1',
+ type: 'above',
+ text_align: 'above',
+ text_padding_left: 16,
+ })
+ prop_add(1, 0, {
+ text: 'above 2',
+ type: 'above',
+ text_align: 'above',
+ text_padding_left: 16,
+ })
+ prop_add(2, 0, {
+ text: 'above 1',
+ type: 'above',
+ text_align: 'above',
+ text_padding_left: 8,
+ })
+ END
+ call writefile(lines, 'XscriptPropAboveTab', 'D')
+ let buf = RunVimInTerminal('-S XscriptPropAboveTab', #{cols: 34, rows: 8})
+ call VerifyScreenDump(buf, 'Test_prop_above_tablen_1', {})
+ call StopVimInTerminal(buf)
+endfunc
+
 func Test_prop_above_with_number()
  CheckRunVimInTerminal