Ingo Karkat wrote:
> I'd like to report a bug that occurs when a very long ex command is
> entered, so that the GUI / console screen space isn't sufficient to
> display the complete command.
>
> I have an external VBScript that uses the VIM OLE SendKeys() function
> (or WshShell.SendKeys() as a fallback) to open a list of files in VIM
> via:
> :drop file1 file2 C:/Program\
> Files/this_is_a_very_very_very_long_filename
> If the list of files is longer than the available space for the ex
> command, the characters that didn't fit in are appended in reversed
> order:
> :args
> [file1] file2 C:/Program\ Fiemanelif_gnol_yrev_yrev_yrev_a_si_siht/sel
> ^ BUG: reversed string!!! ^
>
> This happens:
> - both in GVIM and console VIM
> - on Windows and Linux
> - through OLE SendKeys(), VIM's feedkeys(<string>,'t'), or by manually
> typing the string
> - in VIM 7.1.311 until back to VIM 6.0
> Probably, this is due to some bad pointer increment, which is
> hopefully easy to fix.
>
> Steps to reproduce:
> -------------------
> vim -N -u NONE
> " Limit window size to minimize typing until overflow :-)
> :set columns=20 lines=4
> :drop 1234567890 1234567890 1234567890 1234567890 1234567890
> 1234567890 1234567890 1234567890
> " Enlarge again to better see the output (optional).
> :set columns=80
> :args
> [1234567890] 1234567890 1234567890 1234567890 1234567890 1234567890
> 12345670987654321 098
> " Note the garbled strings at the end!
>
> You can also reproduce without resizing via feedkeys():
> gvim -N -u NONE
> call feedkeys(':drop ', 't') | for i in range(1,500) | call
> feedkeys('1234567890
> ', 't') | endfor | call feedkeys("\<CR>", 't')
> :args
I see the problem. I think the patch below fixes it properly.
*** ../vim-7.1.314/src/ex_getln.c Thu May 29 15:33:13 2008
--- src/ex_getln.c Mon Jun 9 20:10:51 2008
***************
*** 2829,2838 ****
if (has_mbyte)
correct_cmdspos(ccline.cmdpos, c);
#endif
! /* Stop cursor at the end of the screen */
! if (ccline.cmdspos + c >= m)
! break;
! ccline.cmdspos += c;
#ifdef FEAT_MBYTE
if (has_mbyte)
{
--- 2829,2839 ----
if (has_mbyte)
correct_cmdspos(ccline.cmdpos, c);
#endif
! /* Stop cursor at the end of the screen, but do increment the
! * insert position, so that entering a very long command
! * works, even though you can't see it. */
! if (ccline.cmdspos + c < m)
! ccline.cmdspos += c;
#ifdef FEAT_MBYTE
if (has_mbyte)
{
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