Problem: cmdline completion should consider key option
Solution: Disable cmdline completion for key option, slightly
refactor how P_NO_CMD_EXPAND is handled
Harden crypto 'key' option: turn off cmdline completion, disable set-=
"set-=" can be used maliciously with a crypto key, as it allows an
attacker (who either has access to the computer or a plugin author) to
guess a substring by observing the modified state. Simply turn off
set+=/-=/^= for this option as there is no good reason for them to be
used.
Update docs to make that clear as well.
Also, don't allow cmdline completion for 'key' as it just shows *****
which is not useful and confusing to the user what it means (if the user
accidentally hits enter they will have replaced their key with "*****"
instead).
Move logic to better location, don't use above 32-bit for flags
Move P_NO_CMD_EXPAND to use the unused 0x20 instead of going above
32-bits, as currently the flags parameter is only 32-bits on some
systems. Left a comment to warn that future additions will need to
change how the flags work either by making it 64-bit or split into two
member vars.
Also, move the logic for detecting P_NO_CMD_EXPAND earlier so it's not
up to each handler to decide, and you won't see the temporary "..." that
Vim shows while waiting for completion handler to complete.
closes: #13224
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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>
Problem: Search stats not always visible when searching backwards.
Solution: Do not display the top/bot message on top of the search stats.
(Christian Brabandt, closes#12322, closes#12222)
Problem: Too many "else if" statements to handle option values.
Solution: Add more functions to handle option value changes. (Yegappan
Lakshmanan, closes#12058)
Problem: 'statusline' only supports one "%=" item.
Solution: Add support for multiple "%=" items. (TJ DeVries, Yegappan
Lakshmanan, closes#11970, closes#11965)
Problem: Code for making 'shortmess' temporarily empty is repeated.
Solution: Add functions for making 'shortmess' empty and restoring it.
(Christian Brabandt, closes#11709)
Problem: Cannot debug the Kitty keyboard protocol with TermDebug.
Solution: Add Kitty keyboard protocol support to the libvterm fork.
Recognize the escape sequences that the protocol generates. Add
the 'keyprotocol' option to allow the user to specify for which
terminal what protocol is to be used, instead of hard-coding this.
Add recognizing the kitty keyboard protocol status.
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)
Problem: The 'splitscroll' option is not a good name.
Solution: Rename 'splitscroll' to 'splitkeep' and make it a string option,
also supporting "topline". (Luuk van Baal, closes#11258)
Problem: When opening/closing window text moves up/down.
Solution: Add the 'splitscroll' option. When off text will keep its
position as much as possible.
Problem: smart/C/lisp indenting is optional, which makes the code more
complex, while it only reduces the executable size a bit.
Solution: Graduate FEAT_CINDENT, FEAT_SMARTINDENT and FEAT_LISP.
Problem: Some users do not want a line comment always inserted.
Solution: Add the '/' flag to 'formatoptions' to not repeat the comment
leader after a statement when using "o".
Problem: 'wildmenu' only shows few matches.
Solution: Add the "pum" option: use a popup menu to show the matches.
(Yegappan Lakshmanan et al., closes#9707)
Problem: Cannot assign a lambda to an option that takes a function.
Solution: Automatically convert the lambda to a string. (Yegappan
Lakshmanan, closes#9286)
