Patch 8.2.2036

[Bram Moolenaar]

Patch 8.2.2036
Problem: Current buffer is messed up if creating a new buffer for the
quickfix window fails.
Solution: Check that creating the buffer succeeds. (closes #7352)
Files: src/quickfix.c, src/testdir/test_quickfix.vim,
src/testdir/dumps/Test_quickfix_window_fails.dump


*** ../vim-8.2.2035/src/quickfix.c 2020-11-14 13:15:20.062728413 +0100
--- src/quickfix.c 2020-11-23 20:12:35.198093818 +0100
***************
*** 4151,4163 ****
if (qf_buf != NULL)
{
// Use the existing quickfix buffer
! (void)do_ecmd(qf_buf->b_fnum, NULL, NULL, NULL, ECMD_ONE,
! ECMD_HIDE + ECMD_OLDBUF, oldwin);
}
else
{
// Create a new quickfix buffer
! (void)do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, ECMD_HIDE, oldwin);

// save the number of the new buffer
qi->qf_bufnr = curbuf->b_fnum;
--- 4151,4165 ----
if (qf_buf != NULL)
{
// Use the existing quickfix buffer
! if (do_ecmd(qf_buf->b_fnum, NULL, NULL, NULL, ECMD_ONE,
! ECMD_HIDE + ECMD_OLDBUF, oldwin) == FAIL)
! return FAIL;
}
else
{
// Create a new quickfix buffer
! if (do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, ECMD_HIDE, oldwin) == FAIL)
! return FAIL;

// save the number of the new buffer
qi->qf_bufnr = curbuf->b_fnum;
*** ../vim-8.2.2035/src/testdir/test_quickfix.vim 2020-11-14 17:25:44.868329693 +0100
--- src/testdir/test_quickfix.vim 2020-11-23 20:11:36.690293522 +0100
***************
*** 5218,5221 ****
--- 5218,5256 ----
cclose
endfunc

+ " Test for very weird problem: autocommand causes a failure, resulting opening
+ " the quickfix window to fail. This still splits the window, but otherwise
+ " should not mess up buffers.
+ func Test_quickfix_window_fails_to_open()
+ CheckScreendump
+
+ let lines =<< trim END
+ anything
+ try
+ anything
+ endtry
+ END
+ call writefile(lines, 'XquickfixFails')
+
+ let lines =<< trim END
+ split XquickfixFails
+ silent vimgrep anything %
+ normal o
+ au BufLeave * ++once source XquickfixFails
+ " This will trigger the autocommand, which causes an error, what follows
+ " is aborted but the window was already split.
+ silent! cwindow
+ END
+ call writefile(lines, 'XtestWinFails')
+ let buf = RunVimInTerminal('-S XtestWinFails', #{rows: 13})
+ call VerifyScreenDump(buf, 'Test_quickfix_window_fails', {})
+
+ " clean up
+ call term_sendkeys(buf, ":bwipe!\<CR>")
+ call term_wait(buf)
+ call StopVimInTerminal(buf)
+ call delete('XtestWinFails')
+ call delete('XquickfixFails')
+ endfunc
+
" vim: shiftwidth=2 sts=2 expandtab
*** ../vim-8.2.2035/src/testdir/dumps/Test_quickfix_window_fails.dump 2020-11-23 20:14:13.397762907 +0100
--- src/testdir/dumps/Test_quickfix_window_fails.dump 2020-11-23 20:11:46.486260081 +0100
***************
*** 0 ****
--- 1,13 ----
+ |a+0&#ffffff0|n|y|t|h|i|n|g| @66
+ > @74
+ |t|r|y| @71
+ |X+3&&|q|u|i|c|k|f|i|x|F|a|i|l|s| |[|+|]| @38|2|,|0|-|1| @9|T|o|p
+ | +0&&@74
+ |t|r|y| @71
+ @2|a|n|y|t|h|i|n|g| @64
+ |X+1&&|q|u|i|c|k|f|i|x|F|a|i|l|s| |[|+|]| @38|2|,|0|-|1| @9|5|0|%
+ | +0&&@74
+ |~+0#4040ff13&| @73
+ |~| @73
+ |[+1#0000000&|N|o| |N|a|m|e|]| @47|0|,|0|-|1| @9|A|l@1
+ | +0&&@74
*** ../vim-8.2.2035/src/version.c 2020-11-23 18:14:51.276875903 +0100
--- src/version.c 2020-11-23 19:36:41.553757010 +0100
***************
*** 752,753 ****
--- 752,755 ----
{ /* Add new patch number below this line */
+ /**/
+ 2036,
/**/

--
I have to exercise early in the morning before my brain
figures out what I'm doing.

/// Bram Moolenaar -- Br...@Moolenaar.net -- http://www.Moolenaar.net \\\
/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\ an exciting new programming language -- http://www.Zimbu.org ///
\\\ help me help AIDS victims -- http://ICCF-Holland.org ///