Patch 8.2.0329
Problem:    Popup filter converts 0x80 bytes.
Solution:   Keep 0x80 bytes as-is. (Ozaki Kiichi, closes #5706)
Files:      src/popupwin.c, src/testdir/test_popupwin.vim


*** ../vim-8.2.0328/src/popupwin.c      2020-02-28 22:19:38.314023342 +0100
--- src/popupwin.c      2020-02-28 22:39:31.770306734 +0100
***************
*** 2999,3005 ****
  
      // Convert the number to a string, so that the function can use:
      //            if a:c == "\<F2>"
!     buf[special_to_buf(c, mod_mask, TRUE, buf)] = NUL;
      argv[1].v_type = VAR_STRING;
      argv[1].vval.v_string = vim_strsave(buf);
  
--- 2999,3005 ----
  
      // Convert the number to a string, so that the function can use:
      //            if a:c == "\<F2>"
!     buf[special_to_buf(c, mod_mask, FALSE, buf)] = NUL;
      argv[1].v_type = VAR_STRING;
      argv[1].vval.v_string = vim_strsave(buf);
  
*** ../vim-8.2.0328/src/testdir/test_popupwin.vim       2020-02-11 
21:44:08.248016555 +0100
--- src/testdir/test_popupwin.vim       2020-02-28 22:39:31.770306734 +0100
***************
*** 1409,1416 ****
    call setline(1, 'some text')
  
    func MyPopupFilter(winid, c)
!     if a:c == 'e'
!       let g:eaten = 'e'
        return 1
      endif
      if a:c == '0'
--- 1409,1416 ----
    call setline(1, 'some text')
  
    func MyPopupFilter(winid, c)
!     if a:c == 'e' || a:c == "\<F9>"
!       let g:eaten = a:c
        return 1
      endif
      if a:c == '0'
***************
*** 1430,1435 ****
--- 1430,1437 ----
    " e is consumed by the filter
    call feedkeys('e', 'xt')
    call assert_equal('e', g:eaten)
+   call feedkeys("\<F9>", 'xt')
+   call assert_equal("\<F9>", g:eaten)
  
    " 0 is ignored by the filter
    normal $
***************
*** 1440,1446 ****
  
    " x closes the popup
    call feedkeys('x', 'xt')
!   call assert_equal('e', g:eaten)
    call assert_equal(-1, winbufnr(winid))
  
    delfunc MyPopupFilter
--- 1442,1448 ----
  
    " x closes the popup
    call feedkeys('x', 'xt')
!   call assert_equal("\<F9>", g:eaten)
    call assert_equal(-1, winbufnr(winid))
  
    delfunc MyPopupFilter
***************
*** 3271,3274 ****
--- 3273,3298 ----
    bwipe!
  endfunc
  
+ func Test_popupwin_filter_input_multibyte()
+   func MyPopupFilter(winid, c)
+     let g:bytes = range(a:c->strlen())->map({i -> char2nr(a:c[i])})
+     return 0
+   endfunc
+   let winid = popup_create('', #{mapping: 0, filter: 'MyPopupFilter'})
+ 
+   " UTF-8: E3 80 80, including K_SPECIAL(0x80)
+   call feedkeys("\u3000", 'xt')
+   call assert_equal([0xe3, 0x80, 0x80], g:bytes)
+ 
+   if has('gui')
+     " UTF-8: E3 80 9B, including CSI(0x9B)
+     call feedkeys("\u301b", 'xt')
+     call assert_equal([0xe3, 0x80, 0x9b], g:bytes)
+   endif
+ 
+   call popup_clear()
+   delfunc MyPopupFilter
+   unlet g:bytes
+ endfunc
+ 
  " vim: shiftwidth=2 sts=2
*** ../vim-8.2.0328/src/version.c       2020-02-28 22:19:38.314023342 +0100
--- src/version.c       2020-02-28 22:44:28.093370032 +0100
***************
*** 740,741 ****
--- 740,743 ----
  {   /* Add new patch number below this line */
+ /**/
+     329,
  /**/

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