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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: "rvim" can execute a shell through :diffpatch.
Solution: Disallow the shell "patch" command.
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Problem: "clear" macros are not always used.
Solution: Use ALLOC_ONE, VIM_CLEAR, CLEAR_POINTER and CLEAR_FIELD in more
places. (Yegappan Lakshmanan, closes #12104)
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Problem: FOR_ALL_ macros are defined in an unexpected file.
Solution: Move FOR_ALL_ macros to macros.h. Add FOR_ALL_HASHTAB_ITEMS.
(Yegappan Lakshmanan, closes #12109)
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Problem: The code style has to be checked manually.
Solution: Add basic code style checks in a test. Fix or avoid uncovered
problems.
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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 uses too much indent.
Solution: Use an early return. (Yegappan Lakshmanan, closes #11747)
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Problem: Using one window for executing autocommands is insufficient.
Solution: Use up to five windows for executing autocommands.
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Problem: Redraw flags are not named specifically.
Solution: Prefix "UPD_" to the flags, for UPDate_screen().
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Problem: Code has more indent than needed.
Solution: Use continue and return statements. (closes #10824)
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Problem: Invalid memory access in diff mode with "dp" and undo.
Solution: Make sure the line number does not go below one.
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Problem: Accessing freed memory with diff put.
Solution: Bail out when diff pointer is no longer valid.
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Problem: Invalid memory access after diff buffer manipulations.
Solution: Use zero offset when change removes all lines in a diff block.
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Problem: Crash when deleting buffers in diff mode.
Solution: Recompute diffs later. Skip window without a valid buffer.
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Problem: Error from setting an option is silently ignored.
Solution: Handle option value errors better. Fix uses of N_().
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Problem: Old Coverity warning for resource leak.
Solution: Close the file if memory allocation fails.
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Problem: Error messages are spread out.
Solution: Move the last error messages to errors.h.
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Problem: Error messages are spread out.
Solution: Move more error messages to errors.h.
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Problem: Error messages are spread out.
Solution: Move more error messages to errors.h.
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Problem: Error messages are spread out.
Solution: Move more errors to errors.h.
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Problem: Compiler warning from gcc for uninitialized variable.
Solution: Initialize variable. (closes #9429)
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Problem: Coverity reports a memory leak.
Solution: Free memory in case of failure.
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Problem: Diff mode confused by NUL bytes.
Solution: Handle NUL bytes differently. (Christian Brabandt, closes #9421,
closes #9418)
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Problem: The way xdiff is used is inefficient.
Solution: Use hunk_func instead of the out_line callback. (Lewis Russell,
closes #9344)
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Problem: Various spelling mistakes in comments.
Solution: Fix the mistakes. (Dominique Pellé, closes #9416)
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Problem: Error messages are spread out.
Solution: Move more error messages to errors.h.
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Problem: Filler lines are incorrect for other window in diff mode after
making a change.
Solution: Copy filler lines from the current window. (closes #8809)
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Problem: Filler lines are wrong when changing text in diff mode.
Solution: Don't change the filler lines on every change. Check
scrollbinding when updating the filler lines. (closes #8809)
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Problem: Included xdiff code is outdated.
Solution: Sync with xdiff in git 2.33. (Christian Brabandt, closes #8431)
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Problem: Vim9: runtime and compile time type checks are not the same.
Solution: Add more runtime type checks for builtin functions. (Yegappan
Lakshmanan, closes #8646)
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Problem: Vim9: argument types are not checked at compile time.
Solution: Add several more type checks, simplify some. (Yegappan
Lakshmanan, closes #8598)
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Problem: Vim9: argument types are not checked at compile time.
Solution: Add several more type checks, also at runtime. (Yegappan
Lakshmanan, closes #8587)
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Problem: Vim9: argument types are not checked at compile time.
Solution: Add more type checks. (Yegappan Lakshmanan, closes #8581)
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Problem: Unified diff fails if actually used.
Solution: Invoke :diffupdate in the test. Fix the check for working external
diff. (Ghjuvan Lacambre, Christian Brabandt, closes #8197)
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Problem: 'wrap' option is always reset when starting diff mode.
Solution: Add the "followwrap" item in 'diffopt'. (Rick Howe, closes #7797)
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Problem: Command modifier parsing always uses global cmdmod.
Solution: Pass in cmdmod_T to use. Rename struct fields consistently.
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Problem: NFA regexp uses tolower() to compare ignore-case. (Thayne McCombs)
Solution: Use utf_fold() when possible. (ref. neovim #12456)
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Problem: Many type casts are used for vim_strnsave().
Solution: Make the length argument size_t instead of int. (Ken Takata,
closes #5633) Remove some type casts.
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Problem: ml_delete() often called with FALSE argument.
Solution: Use ml_delete_flags(x, ML_DEL_MESSAGE) when argument is TRUE.
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Problem: Clearing a struct is verbose.
Solution: Define and use CLEAR_FIELD() and CLEAR_POINTER().
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Problem: Using the same loop in many places.
Solution: Define more FOR_ALL macros. (Yegappan Lakshmanan, closes #5339)
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Problem: Using old C style comments.
Solution: Use // comments where appropriate.
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Problem: :lockmarks does not work for '[ and '].
Solution: save and restore '[ and '] marks. (James McCoy, closes #5222)
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Problem: After :diffsplit closing the window does not disable diff.
Solution: Add "closeoff" to 'diffopt' and add it to the default.
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Problem: Typos in comments.
Solution: Fix the typos. (Dominique Pelle, closes #5160) Also adjust
formatting a bit.
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Problem: Some MB_ macros are more complicated than necessary. (Dominique
Pelle)
Solution: Simplify the macros. Expand inline.
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Problem: The evalfunc.c file is still too big.
Solution: Move f_pathshorten() to filepath.c. Move f_cscope_connection() to
if_cscope.c. Move diff_ functions to diff.c. Move timer_
functions to ex_cmds2.c. move callback functions to evalvars.c.
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Problem: In diff mode global operations can be very slow.
Solution: Do not call diff_redraw() many times, call it once when redrawing.
And also don't update folds multiple times.
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Problem: Alloc() returning "char_u *" causes a lot of type casts.
Solution: Have it return "void *". (Mike Williams) Define ALLOC_ONE() to
check the simple allocations.
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Problem: "highlight" option of popup windows not supported.
Solution: Implement the "highlight" option.
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