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vim-patch:8.2.5126: substitute may overrun destination buffer

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Problem:    Substitute may overrun destination buffer.
Solution:   Disallow switching buffers in a substitute expression.

d6211a52ab

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq 2023-01-17 20:15:42 +08:00
parent 8aece0089d
commit c416da9d1a
2 changed files with 16 additions and 3 deletions
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6
src/nvim/ex_docmd.c
View File

@ -5249,9 +5249,9 @@ void do_exedit(exarg_T *eap, win_T *old_curwin)
old_curwin == NULL ? curwin : NULL);
} else if ((eap->cmdidx != CMD_split && eap->cmdidx != CMD_vsplit)
|| *eap->arg != NUL) {
// Can't edit another file when "curbuf->b_ro_locked" is set. Only ":edit"
// can bring us here, others are stopped earlier.
if (*eap->arg != NUL && curbuf_locked()) {
// Can't edit another file when "textlock" or "curbuf->b_ro_locked" is set.
// Only ":edit" or ":script" can bring us here, others are stopped earlier.
if (*eap->arg != NUL && text_or_buf_locked()) {
return;
}
n = readonlymode;

13
src/nvim/testdir/test_substitute.vim
View File

@ -1076,6 +1076,19 @@ func Test_sub_open_cmdline_win()
call delete('Xresult')
endfunc
" This was editing a script file from the expression
func Test_sub_edit_scriptfile()
new
norm o0000000000000000000000000000000000000000000000000000
func EditScript()
silent! scr! Xfile
endfunc
s/\%')/\=EditScript()
delfunc EditScript
bwipe!
endfunc
" Test for the 2-letter and 3-letter :substitute commands
func Test_substitute_short_cmd()
new