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Problem: Many places in the code use `findoption()` to access an option using its name, even if the option index is available. This is very slow because it requires looping through the options array over and over.
Solution: Use option index instead of name wherever possible. Also introduce an `OptIndex` enum which contains the index for every option as enum constants, this eliminates the need to pass static option names as strings.
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Problem: The options[] array is not sorted alphabetically.
Solution: Sort it alphabetically. Add a test. Avoid unnecessary loop
iterations in findoption().
closes: vim/vim#13648
Cherry-pick Test_set_one_column() change from patch 8.2.0432.
https://github.com/vim/vim/commit/f48558e10a08a1a483e25ef847bbceeac6b44561
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Problem: Currently, `get_option_value()` returns 3 separate things: The actual value of the option, whether the option is hidden, and the option flags. This makes the function difficult to refactor, modify or otherwise reason about.
Solution: Split `get_option_value()` into 3 functions, each with a single purpose. This also affects `get_option_value_for()`.
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Problem: The entire marktree needs to be traversed each time a sign is
removed from the sentinel line.
Solution: Remove sentinel line and instead keep track of the number of
lines that hold up the 'signcolumn' in "max_count". Adjust this
number for added/removed signs, and set it to 0 when the
maximum number of signs on a line changes. Only when
"max_count" is decremented to 0 due to sign removal do we need
to check the entire buffer.
Also replace "invalid_top" and "invalid_bot" with a map of
invalid ranges, further reducing the number of lines to be
checked.
Also improve tree traversal when counting the number of signs.
Instead of looping over the to be checked range and counting
the overlap for each row, keep track of the overlap in an
array and add this to the count.
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functions
Problem: [security]: stack-buffer-overflow in option callback functions
Solution: pass size of errbuf down the call stack, use snprintf()
instead of sprintf()
We pass the error buffer down to the option callback functions, but in
some parts of the code, we simply use sprintf(buf) to write into the error
buffer, which can overflow.
So let's pass down the length of the error buffer and use sprintf(buf, size)
instead.
Reported by @henices, thanks!
https://github.com/vim/vim/commit/b39b240c386a5a29241415541f1c99e2e6b8ce47
Co-authored-by: Christian Brabandt <cb@256bit.org>
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Discovered using __sanitizer_print_memory_profile().
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FUNC_ATTR_* should only be used in .c files with generated headers.
Defining FUNC_ATTR_* as empty in headers causes misuses of them to be
silently ignored. Instead don't define them by default, and only define
them as empty after a .c file has included its generated header.
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Problem: We use the `p_force_on` and `p_force_off` variables to check if a variable is immutable and what its default value is. This is not only hacky and unintuitive, but also is limited to only boolean options.
Solution: Replace `p_force_on` and `p_force_off` with an `immutable` property for options, which indicates if an option is immutable. Immutable options cannot be changed from their default value.
Ref: #25672.
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Create mapping to most of the C spec and some POSIX specific functions.
This is more robust than relying files shipped with IWYU.
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Problem: Minimum and maximum signcolumn width is determined each redraw.
Solution: Determine and store 'signcolumn' range when option is set.
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This requires removing the "Inner expression should be aligned" rule
from clint as it prevents essentially any formatting regarding ternary
operators.
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Problem: The legacy signlist data structures and associated functions are
redundant since the introduction of extmark signs.
Solution: Store signs defined through the legacy commands in a hashmap, placed
signs in the extmark tree. Replace signlist associated functions.
Usage of the legacy sign commands should yield no change in behavior with the
exception of:
- "orphaned signs" are now always removed when the line it is placed on is
deleted. This used to depend on the value of 'signcolumn'.
- It is no longer possible to place multiple signs with the same identifier
in a single group on multiple lines. This will now move the sign instead.
Moreover, both signs placed through the legacy sign commands and through
|nvim_buf_set_extmark()|:
- Will show up in both |sign-place| and |nvim_buf_get_extmarks()|.
- Are displayed by increasing sign identifier, left to right.
Extmark signs used to be ordered decreasingly as opposed to legacy signs.
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We already have an extensive suite of static analysis tools we use,
which causes a fair bit of redundancy as we get duplicate warnings. PVS
is also prone to give false warnings which creates a lot of work to
identify and disable.
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When the given length is exactly the number of bytes to copy, xmemdupz()
makes the intention clearer.
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Problem: `os_doskip` seems to be unnecessary since everything that sets it to true also returns an error, and `errmsg` being non-`NULL` already skips most of the processing.
Solution: Remove `os_doskip`.
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While the interfaces for setting number and boolean options are now unified by #25394, there is still a separate `set_string_option` function that is used for setting a string option. This PR removes that function and merges it with set_option.
BREAKING CHANGE: `v:option_old` is now the old global value for all global-local options, instead of just string global-local options. Local value for a global-local number/boolean option is now unset when the option is set (e.g. using `:set` or `nvim_set_option_value`) without a scope, which means they now behave the same way as string options.
Ref: #25672
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Problem: With 'smoothscroll' set, "w_skipcol" is not reset when unsetting 'wrap'.
Resulting in incorrect calculation of the cursor position.
Solution: Reset "w_skipcol" when unsetting 'wrap'.
fixes: vim/vim#12970
closes: vim/vim#13439
https://github.com/vim/vim/commit/1bf1bf569b96d2f9b28e0cce0968ffbf2fb80aac
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Uncrustify is the source of truth where possible.
Remove any redundant checks from clint.py.
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Problem: #25716 removed the logic for getting the correct value of the `'modified'` option when using `nvim_buf_get_option()`. So the function now returns an incorrect value of `'modified'` for scratch buffers.
Solution: Re-add the logic for getting the correct value of `'modified'`. Also make it so that the logic only exists in one place instead of being duplicated across multiple places in the code.
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`SREQ_*` values are now actual typedef'd enums. `get_option_value_strict()` has also been refactored and split into two functions, `get_option_attrs()` for getting the option attributes, and `get_option_value_strict()` for getting the actual value. Moreover, it now returns an `OptVal`. Other miscellaneous refactors have also been made.
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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: vim/vim#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: vim/vim#13361
https://github.com/vim/vim/commit/8f4fb007e4d472b09ff6bed9ffa485e0c3093699
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Reduce code duplication between `do_set_option_string` and `set_string_option` by making the former call the latter within itself.
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BREAKING CHANGE: This breaks the OptionSet autocommand, as the `v:` values associated with it (`v:option_new`, `v:option_old`, `v:option_oldlocal` and `v:option_oldglobal`) are now the same type as the option, instead of all option values being converted to strings.
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runtime: Fix more typos (vim/vim#13354)
* Fix more typos
* Fix typos in ignored runtime/ directory
https://github.com/vim/vim/commit/dbf749bd5aaef6ea2d28bce081349785d174d96a
Co-authored-by: Viktor Szépe <viktor@szepe.net>
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Problem: The style guide states that all switch statements that are not conditional on an enum must have a `default` case, but does not give any explicit guideline for switch statements that are conditional on enums. As a result, a `default` case is added in many enum switch statements, even when the switch statement is exhaustive. This is not ideal because it removes the ability to have compiler errors to easily detect unchanged switch statements when a new possible value for an enum is added.
Solution: Add explicit guidelines for switch statements that are conditional on an enum, clarifying that a `default` case is not necessary if the switch statement is exhaustive. Also refactor pre-existing code with unnecessary `default` cases.
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(#25569)
Problem: cmdline-completion for comma-separated options wrong
Solution: Fix command-line expansions for options with filenames with
commas
Fix command-line expansions for options with filenames with commas
Cmdline expansion for option values that take a comma-separated list
of file names is currently not handling file names with commas as the
commas are not escaped. For such options, the commas in file names need
to be escaped (to differentiate from a comma that delimit the list
items). The escaped comma is unescaped in `copy_option_part()` during
option parsing.
Fix as follows:
- Cmdline completion for option values with comma-separated file/folder
names will not start a new match when seeing `\\,` and will instead
consider it as one value.
- File/folder regex matching will strip the `\\` when seeing `\\,` to
make sure it can match the correct files/folders.
- The expanded value will escape `,` with `\\,`, similar to how spaces
are escaped to make sure the option value is correct on the cmdline.
This fix also takes into account the fact that Win32 Vim handles file
name escaping differently. Typing '\,' for a file name results in it
being handled literally but in other platforms '\,' is interpreted as a
simple ',' and commas need to be escaped using '\\,' instead.
Also, make sure this new logic only applies to comma-separated options
like 'path'. Non-list options like 'set makeprg=<Tab>' and regular ex
commands like `:edit <Tab>` do not require escaping and will continue to
work.
Also fix up documentation to be clearer. The original docs are slightly
misleading in how it discusses triple slashes for 'tags'.
closes: vim/vim#13303
related: vim/vim#13301
https://github.com/vim/vim/commit/54844857fd6933fa4f6678e47610c4b9c9f7a091
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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long is 32 bits on windows, while it is 64 bits on other architectures.
This makes the type suboptimal for a codebase meant to be
cross-platform. Replace it with more appropriate integer types.
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Problem: Clean up cmdline option completion code
Solution: Fix various minor problems
- Fix manual array size calculations to just use `ARRAY_LENGTH()`.
- Fix unintentional typo in comments due to copy-paste error.
- Fix assert_equal() usages to pass the expected value to first
parameter instead of 2nd one to avoid confusion.
- Fix signed vs unsigned warnings
- Correct misplaced comments about set_op_T and set_prefix_T
and fix a typo in another comment
closes: vim/vim#13249
closes: vim/vim#13237
https://github.com/vim/vim/commit/6d113472601fa6f3a444a95ef7b11d4309215117
N/A patch:
vim-patch:9.0.1976: style: space before tab in optionstr.c
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
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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: vim/vim#13224
https://github.com/vim/vim/commit/6ee7b521fa7531ef356ececc8be7575c3800f872
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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