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Problem: E95 is possible if a buffer called "[Command Line]" already
exists when opening the cmdwin. This can also happen if the
cmdwin's buffer could not be deleted when closing.
Solution: Un-name the cmdwin buffer, and give it a special name instead,
similar to what's done for quickfix buffers and for unnamed
prompt and scratch buffers. As a result, BufFilePre/Post are
no longer fired when opening the cmdwin. Add a "command" key
to the dictionary returned by getbufinfo() to differentiate
the cmdwin buffer instead. (Sean Dewar)
NOTE: This is technically a breaking change... maybe this needs a different
solution? (Or maybe this issue can be ignored...)
A GitHub search reveals some plugins expect the old behaviour. However, many of
those plugins also do not seem to account for the string being translated, so
they are subtly broken anyway (not withstanding the fact that you can call any
old buffer "[Command Line]" too...)
closes: #12819
Signed-off-by: Sean Dewar <seandewar@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
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Problem: Autocmds triggered from opening the cmdwin (in win_split and
do_ecmd) can cause issues such as E199, as the current checks
are insufficient.
Solution: Commands executed from the cmdwin apply to the old curwin/buf,
so they should be kept in a "suspended" state; abort if
they've changed. Also abort if cmdwin/buf was tampered with,
and check that curwin is correct. Try to clean up the cmdwin
buffer (only if hidden and non-current to simplify things; the
same approach is used when closing cmdwin normally), and add a
beep. (Sean Dewar)
It'd be nice to also check that curwin was *really* created by win_split, as
autocommands can change curwin before it returns (so it can't be assumed to be
that of the split); for now, this means that the cmdwin may not be the botwin in
that case, which is probably OK.
closes: #12819
Signed-off-by: Sean Dewar <seandewar@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
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Problem: Things that temporarily change/restore curwin/buf (e.g:
win_execute, some autocmds) may break assumptions that
curwin/buf is the cmdwin when "cmdwin_type != 0", causing
issues.
Solution: Expose the cmdwin's real win/buf and check that instead. Also
try to ensure these variables are NULL if "cmdwin_type == 0",
allowing them to be used directly in most cases without
checking cmdwin_type. (Sean Dewar)
Alternatively, we could ban win_execute in the cmdwin and audit all places that
temporarily change/restore curwin/buf, but I didn't notice any problems arising
from allowing this (standard cmdwin restrictions still apply, so things that may
actually break the cmdwin are still forbidden).
closes: #12819
Signed-off-by: Sean Dewar <seandewar@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
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Problem: POSIX function name in exarg struct causes issues
on OpenVMS
Solution: Rename getline member in exarg struct to ea_getline,
remove isinf() workaround for VMS
There are compilers that do not treat well POSIX functions - like
getline - usage in the structs.
Older VMS compilers could digest this... but the newer OpenVMS compilers
( like VSI C x86-64 X7.4-843 (GEM 50XB9) ) cannot deal with these
structs. This could be limited to getline() that is defined via
getdelim() and might not affect all POSIX functions in general - but
avoiding POSIX function names usage in the structs is a "safe side"
practice without compromising the functionality or the code readability.
The previous OpenVMS X86 port used a workaround limiting the compiler
capabilities using __CRTL_VER_OVERRIDE=80400000
In order to make the OpenVMS port future proof, this pull request
proposes a possible solution.
closes: #13704
Signed-off-by: Zoltan Arpadffy <zoltan.arpadffy@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
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Problem: Cannot detect overstrike mode in Cmdline mode
Solution: Make mode() return "cr" for overstrike
closes: #13569
Signed-off-by: Sam-programs <None>
Signed-off-by: Christian Brabandt <cb@256bit.org>
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Problem: [security] overflow in :history
Solution: Check that value fits into int
The get_list_range() function, used to parse numbers for the :history
and :clist command internally uses long variables to store the numbers.
However function arguments are integer pointers, which can then
overflow.
Check that the return value from the vim_str2nr() function is not larger
than INT_MAX and if yes, bail out with an error. I guess nobody uses a
cmdline/clist history that needs so many entries... (famous last words).
It is only a moderate vulnerability, so impact should be low.
Github Advisory:
https://github.com/vim/vim/security/advisories/GHSA-q22m-h7m2-9mgm
Signed-off-by: Christian Brabandt <cb@256bit.org>
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Problem: A few remaining cmdline completion issues with C-E/Y
Solution: Fix cmdline completion fuzzy/Ctrl-E/Ctrl-Y/options when not
used at the end
Fix cmdline completion fuzzy/Ctrl-E/Ctrl-Y/options when not used at the end
A few places in the cmdline completion code only works properly when the
user hits Tab (or 'wildchar') at the end of the cmdline, even though
it's supposed to work even in the middle of the line.
For fuzzy search, `:e ++ff`, and `:set hl=`, fix completion code to make
sure to use `xp_pattern_len` instead of assuming the entire `xp_pattern`
is the search pattern (since it contains texts after the cursor).
Fix Ctrl-E / Ctrl-Y to not jump to the end when canceling/accepting a
wildmenu completion. Also, make them work even when not using
`set wildoptions+=pum` as there is no drawback to doing so.
(Related issue where this was brought up: #13331)
closes: #13362
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: [security] use-after-free with wildmenu
Solution: properly clean up the wildmenu when exiting
Fix wildchar/wildmenu/pum memory corruption with special wildchar's
Currently, using `wildchar=<Esc>` or `wildchar=<C-\>` can lead to a
memory corruption if using wildmenu+pum, or wrong states if only using
wildmenu. This is due to the code only using one single place inside the
cmdline process loop to perform wild menu clean up (by checking
`end_wildmenu`) but there are other odd situations where the loop could
have exited and we need a post-loop clean up just to be sure. If the
clean up was not done you would have a stale popup menu referring to
invalid memory, or if not using popup menu, incorrect status line (if
`laststatus=0`).
For example, if you hit `<Esc>` two times when it's wildchar, there's a
hard-coded behavior to exit command-line as a failsafe for user, and if
you hit `<C-\><C-\><C-N>` it will also exit command-line, but the clean
up code would not have hit because of specialized `<C-\>` handling.
Fix Ctrl-E / Ctrl-Y to not cancel/accept wildmenu if they are also
used for 'wildchar'/'wildcharm'. Currently they don't behave properly,
and also have potentially memory unsafe behavior as the logic is
currently not accounting for this situation and try to do both.
(Previous patch that addressed this: #11677)
Also, correctly document Escape key behavior (double-hit it to escape)
in wildchar docs as it's previously undocumented.
In addition, block known invalid chars to be set in `wildchar` option,
such as Ctrl-C and `<CR>`. This is just to make it clear to the user
they shouldn't be set, and is not required for this bug fix.
closes: #13361
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: cannot complete option values
Solution: Add completion functions for several options
Add cmdline tab-completion for setting string options
Add tab-completion for setting string options on the cmdline using
`:set=` (along with `:set+=` and `:set-=`).
The existing tab completion for setting options currently only works
when nothing is typed yet, and it only fills in with the existing value,
e.g. when the user does `:set diffopt=<Tab>` it will be completed to
`set diffopt=internal,filler,closeoff` and nothing else. This isn't too
useful as a user usually wants auto-complete to suggest all the possible
values, such as 'iblank', or 'algorithm:patience'.
For set= and set+=, this adds a new optional callback function for each
option that can be invoked when doing completion. This allows for each
option to have control over how completion works. For example, in
'diffopt', it will suggest the default enumeration, but if `algorithm:`
is selected, it will further suggest different algorithm types like
'meyers' and 'patience'. When using set=, the existing option value will
be filled in as the first choice to preserve the existing behavior. When
using set+= this won't happen as it doesn't make sense.
For flag list options (e.g. 'mouse' and 'guioptions'), completion will
take into account existing typed values (and in the case of set+=, the
existing option value) to make sure it doesn't suggest duplicates.
For set-=, there is a new `ExpandSettingSubtract` function which will
handle flag list and comma-separated options smartly, by only suggesting
values that currently exist in the option.
Note that Vim has some existing code that adds special handling for
'filetype', 'syntax', and misc dir options like 'backupdir'. This change
preserves them as they already work, instead of converting to the new
callback API for each option.
closes: #13182
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: Indentation issues
Solution: Fix code indentation issues.
closes: #12906
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
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Problem: no support for custom cmdline completion
Solution: Add new vimscript functions
Add the following two functions:
- getcmdcompltype() returns custom and customlist functions
- getcompletion() supports both custom and customlist
closes: #12228
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Shougo Matsushita <Shougo.Matsu@gmail.com>
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Problem: Dead code in open_cmdwin()
Solution: Remove it
closes: #12839
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Sean Dewar <seandewar@users.noreply.github.com>
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Problem: wrong viewport restored for incsearch and smoothscroll
Solution: Save and restore skipcol as well
closes: #12713
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
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Problem: Incsearch not triggered when pasting clipboard register on the
command line.
Solution: Also set "literally" when using a clipboard register. (Ken Takata,
closes #12460)
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Problem: RedrawingDisabled not used consistently.
Solution: Avoid RedrawingDisabled going negative. Set RedrawingDisabled in
win_split_ins(). (closes #11961)
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Problem: In cmdline window S-Tab does not select previous completion.
(Maxim Kim)
Solution: Add a mappint for S-Tab. (closes #12116)
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Problem: Insufficient testing for getcmdcompltype().
Solution: Add a few more test cases. (closes #12268)
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Problem: Crash when passing NULL to setcmdline(). (Andreas Louv)
Solution: Use tv_get_string() instead of using v_string directly.
(closes #12231, closes #12227)
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Problem: CTRL-X on 2**64 subtracts two. (James McCoy)
Solution: Correct computation for large number. (closes #12103)
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Problem: Handling new value of an option has a long "else if" chain.
Solution: Use a function pointer. (Yegappan Lakshmanan, closes #12015)
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Problem: Change for triggering incsearch not sufficiently tested.
Solution: Add a test case. Simplify the code. (closes #11971)
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Problem: Inserting a register on the command line does not trigger
incsearch or update hlsearch.
Solution: Have cmdline_insert_reg() return CMDLINE_CHANGED when appropriate
and handle it correctly. (Ken Takata, closes #11960)
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Problem: CTRL-N and -P on cmdline don't trigger CmdlineChanged.
Solution: Jump to cmdline_changed instead of cmdline_not_changed.
(closes #11956)
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Problem: Code is indented more than necessary.
Solution: Use an early return where it makes sense. (Yegappan Lakshmanan,
closes #11792)
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Problem: Code is indented more than needed.
Solution: Use an early return to reduce indentation. (Yegappan Lakshmanan,
closes #11769)
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Problem: Code is indented more than needed.
Solution: Use an early return to reduce indenting. (Yegappan Lakshmanan,
closes #11758)
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Problem: Test for <Cmd> mapping with CmdlineChanged fails.
Solution: Put back the check for the cmdline length not changing.
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Problem: Using a <Cmd> mapping CmdlineChanged may be triggered twice.
Solution: Count the number of times CmdlineChanged is triggered and avoid
doing it twice. (closes #116820
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Problem: Function name does not match what it is used for.
Solution: Include the modifier in the name. (closes #11679)
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Problem: The keyboard state response may end up in a shell command.
Solution: Only request the keyboard protocol state when the typeahead is
empty, no more commands are following and not exiting. Add the
t_RK termcap entry for this.
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Problem: May redraw when not needed, causing slow scrolling.
Solution: Do not redraw when w_skipcol doesn't change. When w_skipcol
changes only redraw from the top. (issue #11559)
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Problem: Horizontal mouse scroll only works in the GUI.
Solution: Make horizontal mouse scroll also work in a terminal.
(Christopher Plewright, closes #11448)
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Problem: Too many #ifdefs.
Solution: Graduate the +cmdwin feature. Now the tiny and small builds are
equal, drop the small build. (Martin Tournoij, closes #11268)
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Problem: When quitting the cmdline window with CTRL-C it remains visible.
Solution: Redraw to avoid confusion. Adjust the error message.
(closes #11152) Adjust the cursor position after CTRL-C.
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Problem: Using freed memory with cmdwin and BufEnter autocmd.
Solution: Make sure pointer to b_p_iminsert is still valid.
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Problem: Cursor moves if cmdwin is closed when 'splitscroll' is off.
Solution: Skip win_fix_cursor if called when cmdwin is open or closing.
(Luuk van Baal, closes #11134)
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Problem: Cursor moves when cmdwin is closed when 'splitscroll' is off.
Solution: Temporarily set 'splitscroll' when jumping back to the original
window. (closes #11128)
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Problem: Using :echowin while at the hit-enter prompt causes problems.
Solution: Do not prompt for :echowin. Postpone showing the message window.
Start the timer when the window is displayed.
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Problem: The 'cmdheight' zero support causes too much trouble.
Solution: Revert support for 'cmdheight' being zero.
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Problem: Cannot use the message popup window directly.
Solution: Add ":echowindow".
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Problem: Command line type of CmdlineChange differs from getcmdtype().
Solution: Use the same type. (closes #11005)
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Problem: Clearing screen causes flicker.
Solution: Do not clear but redraw in more cases. Add () to "wait_return".
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Problem: Screen flickers when 'cmdheight' is zero.
Solution: Redraw over existing text instead of clearing.
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Problem: Error messages for setcmdline() could be better.
Solution: Use more specific error messages. (Yegappan Lakshmanan,
closes #10995)
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Problem: Messages window not hidden when starting a command line.
Solution: Hide the messages window. (closes #10996)
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Problem: It is not easy to change the command line from a plugin.
Solution: Add setcmdline(). (Shougo Matsushita, closes #10869)
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Problem: The tiny version has the popup menu but not 'wildmenu'.
Solution: Graduate the wildmenu feature.
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Problem: Using INIT() in non-header files.
Solution: Remove INIT(). (closes #10981)
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Problem: Build failure without the +wildmenu feature.
Solution: Move parenthesis.
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Problem: Shift-Tab shows matches on cmdline when 'wildmenu' is off.
Solution: Only show matches when 'wildmode' contains "list". (closes #10951)
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