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feat(shared): tbl_deep_extend improvements #15094

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merged 1 commit into from Jul 19, 2021

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folke
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@folke folke commented Jul 15, 2021

Right now, empty tables are treated as lists in the deep extend method, which means if you use force and have an empty table value in a table on the right, it will overwrite the existsing value.

vim.tbl_deep_extend("force", { ss = { a = 1 } }, { ss = {} }) ==> empty
vim.tbl_deep_extend("force", { ss = { a = 1 } }, { ss = { b = 1} }) => has both a and b

It also fixes an issue when merging values of a different type. This used to fail:
vim.tbl_deep_extend("force", {a=true}, {a={b= 1}})

This PR fixes that.
Additional tests have been included

@github-actions github-actions bot added the lua stdlib label Jul 15, 2021
@folke folke force-pushed the tbl_extend_empty branch 2 times, most recently from 383f191 to 518b445 Compare July 15, 2021 09:59
@folke folke changed the title fix(shared): don't treat empty tables as list in deep extend feat(shared): tbl_deep_extend improvements and vim.merge Jul 15, 2021
@folke folke requested a review from mjlbach July 16, 2021 06:22
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mjlbach commented Jul 16, 2021

@folke it would probably be useful to state here the utility of vim.merge for future reference. Also note, we'll need to update #14090 with the changes to tbl_deep_extend.

@tjdevries are you ok with vim.merge? It's a top level namespace function so I'm not comfortable merging it without a sign-off. The implementation looks correct to me.

Test failure looks unrelated:

2021-07-15T10:11:34.3508826Z �[1m�[35m[  FAILED  ]�[0m�[0m �[1m1�[0m test, listed below:
2021-07-15T10:11:34.3509686Z �[1m�[35m[  FAILED  ]�[0m�[0m �[36mtest/functional/ui/messages_spec.lua�[0m @ �[36m1279�[0m: �[1mpager can be quit�[0m
2021-07-15T10:11:34.3510427Z test/functional/ui/messages_spec.lua:1282: Row 1 did not match.
2021-07-15T10:11:34.3510935Z Expected:
2021-07-15T10:11:34.3511257Z   |*0                        |
2021-07-15T10:11:34.3511578Z   |1                        |
2021-07-15T10:11:34.3511894Z   |2                        |
2021-07-15T10:11:34.3512195Z   |3                        |
2021-07-15T10:11:34.3512664Z   |{4:-- More --}^               |
2021-07-15T10:11:34.3512996Z Actual:
2021-07-15T10:11:34.3513311Z   |*0)                       |
2021-07-15T10:11:34.3513630Z   |1                        |
2021-07-15T10:11:34.3513929Z   |2                        |
2021-07-15T10:11:34.3514239Z   |3                        |
2021-07-15T10:11:34.3514697Z   |{4:-- More --}^               |
2021-07-15T10:11:34.3514927Z 

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folke commented Jul 16, 2021

@mjlbach the existing tests for tbl_deep_extend all passed, but I'll add in a couple of new ones that should now pass with the fixes and would've failed previously.

I'll also add some tests for vim.merge and a more detailed description here + a note on how tbl_deep_extend will work slightly different as before.

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mjlbach commented Jul 16, 2021

Yes, that would be great. I tested all of them myself when reviewing too. We might want to expand the docstring for deep_extend too.

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folke commented Jul 16, 2021

@mjlbach added tests and updated the description of the PR.

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folke commented Jul 18, 2021

I just pushed an update that restores the behavior with tables with number indices as it used to be.

So tables can be merged, if both are either an empty table, or not vim.tbl_islist

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mjlbach commented Jul 18, 2021

Lets break vim.merge into its own PR and merge the deep_extend changes.

@folke folke changed the title feat(shared): tbl_deep_extend improvements and vim.merge feat(shared): tbl_deep_extend improvements Jul 18, 2021
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folke commented Jul 18, 2021

@mjlbach I removed vim.merge from this PR

@folke folke mentioned this pull request Jul 18, 2021
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folke commented Jul 18, 2021

vim.merge is now at #15124

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mjlbach commented Jul 18, 2021

@folke can you update #14090?

Thanks!

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mjlbach commented Jul 18, 2021

Actually before I merge can you updated the commit body with a few examples of the old and new behavior?

An empty table was previously always treated as a list, which means that
while merging tables, whenever an empty table was encountered it would
  always truncate any table on the left.

`vim.tbl_deep_extend("force", { b = { a = 1 } }, { b = {} })`

Before: `{ b = {} }`
After: `{ b = { a = 1 } }`
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folke commented Jul 19, 2021

@mjlbach I updated the commit message.

I can't update #14090 since it's locked.

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mjlbach commented Jul 19, 2021

We should let all org members write to locked issues, not sure how to change that setting but I think it has to be someone with admin rights to the repo. I'll merge once the tests are green and post to the issue.

@mjlbach mjlbach merged commit 526fc60 into neovim:master Jul 19, 2021
bfredl added a commit that referenced this pull request Nov 30, 2021
BREAKING CHANGES

* 32-bit windows builds are no longer provided.

* **build deps**: use libuv 1.42.0 upstream for WIN32 (#15889) (f6c0a37), closes #15889
  * removes Windows 7 support
  * removes support for mouse and alternate buffers in TUI for Windows 8 and 8.1

* **lsp/diagnostic:** highlight groups and signs for LSP diagnostics renamed (e.g. `LspDiagnosticsDefaultWarning` to `DiagnosticWarn`) (a5bbb93)

* **diagnostic:** make DiagnosticChanged a first class autocmd (#16098) (150a592), closes #16098
  * `au User LspDiagnosticsChanged` autocommands are not supported. Use the new first-class DiagnosticChanged event instead.

* **lua**: `register_keystroke_callback` => `on_key` (#15460) (69fe427)
  * **note**: this breaking change was included in 0.5.1

FEATURES

* **:source, nvim_exec:** defer script item creation until s:var access (da9b0ab)
* **:source, nvim_exec:** support script-local variables (d4ed51e), closes #13143 #11507
* **lua:** add trimempty optional parameter to vim.split (5fa26e2)
* **lua:** add vim.str_utf_{start,end} (#16129) (2230b57)
* **lua:** add vim.str_utf_pos function (d752cbc)
* **lsp:** aggregate code actions from all clients (#15121) (c36df20)
* **api:** add lua C bindings for xdiff (#14536) (3d3c0c6)
* **api:** evaluate statusline string #16020 (9086938)
* **api:** named marks set, get, delete #15346 (49fdc62)
* **api:** nvim_get_chan_info: include "argv" for jobs #15537 (0603eba), closes #15440
* **api:** win_viewport also sends line_count #15613 (086631c)
* **api:** support :terminal input callback in lua (9e41e82)
* **ci:** add backport PR action (#14766) (6cc456d)
* **decorations:** allow more than one stacked highlight in a virt_text (1495d36)
* **decorations:** support virtual lines (392c658) (8d7816c)
* **diagnostic:** move vim.lsp.diagnostic to vim.diagostic and support other sources (a5bbb93)
* **diagnostic:** add 'prefix' option to open_float (#16321) (3c74ba4)
* **diagnostic:** add option to include diagnostic source (d43151e)
* **diagnostic:** allow 'prefix' option to return highlight (cc48837)
* **diagnostic:** allow customized diagnostic messages (#15742) (d999c96)
* **diagnostic:** match(), tolist(), fromlist() #15704 (e61ea77)
* **diagnostic:** update jumplist on goto_next/prev (#15942) (b55944e)
* **diagnostic:** use `scope = 'line'` by default for `open_float()` (#16456) (217f9f8), closes #16453
* **diagnostic:** support severity_sort (32c0631)
* **checkhealth:** provide function for command line completion (8b43b07)
* **f_chansend:** support Blob data argument (7e9ea08)
* **job:** add parameter to close stdin (eb7f24b)
* **keywordprg:** use :terminal for external commands #15398 (a90513c), closes #2995 #2761
* **lsp:** add 'focus' option to open_floating_preview (#16465) (fff8827)
* **lsp:** add a registry for client side code action commands (6c03601)
* **lsp:** add client command support to codelens (#15820) (19a77cd)
* **lsp:** add codeAction/resolve support (#15818) (ec4731d)
* **lsp:** add exit_timeout flag (#16070) (80456cf)
* **lsp:** add formatexpr (#16186) (52fa1d2)
* **lsp:** add lsp healthcheck (e268026)
* **lsp:** add per-client commands (#16101) (519d8de)
* **lsp:** add tagfunc (#16103) (f940e7a)
* **lsp:** add warning message for large log size (e6777a7)
* **lsp:** allow configuring zindex for floating windows (#15086) (c487a73)
* **lsp:** allow diagnostics to be disabled for a buffer (#15134) (1aeb945)
* **lsp:** allow root_dir to be nil (#15430) (ff0833c)
* **lsp:** highlight active parameter in signature help (#15018) (af26371)
* **lsp:** improve vim.lsp.util.apply_text_edits (#15561) (41cfba6)
* **lsp:** include original request params in handler ctx (187579f)
* **lsp:** jump to diagnostics by position (#14795) (ea39ff5)
* **lsp:** Make line diagnostics display prettier (e43dbfd)
* **lsp:** make list handlers configurable (#15199) (3e00d4f)
* **lsp:** support textDocument/prepareRename (#15514) (c1f573f)
* **lsp:** use uv_spawn to check if server executable (#16430) (1a60580)
* **lsp:** use vim.ui.select() in codelenses (#16004) (e7ea54a)
* **lsp:** utilize textEdit.range for startbyte in omnifunc (#15957) (e9d6f7c)
* **lua:** add lua-cjson as vendored dependency (8decc9f)
* **lua:** add vim.mpack for msgpack support in lua (eaf661d)
* **lua:** allow passing handles to vim.b/w/t (6c5e7bd)
* **lua:** convert binary string with NULs to Blob (de9df82)
* **lua:** document support of packages with v:lua syntax (9dd371b)
* **lua:** enable stack traces in error output (#16228) (03b805a)
* **lua:** expose lua-cjson as vim.json (30fed27)
* **lua:** make vim.mpack support vim.NIL and vim.empty_dict() (0f59666)
* **match:** allow hl group to be defined after :match command (fca52f5)
* **msgpack:** convert Blobs to BIN strings (af6f454)
* **health:** support lua healthchecks (9249dcd), closes #15632
* **shada:** restore Blob globals properly (ef729fb)
* **terminal:** TermClose: set exit code in v:event.status #15406 (50b30de), closes #4713
* **treesitter:** add next, prev sibling method (1400841)
* **treesitter:** allow to set highlight priority for queries (242608e)
* **ui:** add `opt.kind` to `vim.ui.select` (#15838) (7ae86c1)
* **ui:** add vim.ui.input and use in lsp rename (#15959) (16d4af6)
* **ui:** add vim.ui.select and use in code actions (#15771) (63fde08)
* **vim script:** support calling v:lua as a method (b2994e3)

CHANGES

* **defaults:** auto-create backup dir (4600193)
* **defaults:** inccommand=nosplit #15395 (7215d35)
* **defaults:** set undo points in <C-U> and <C-W> (#15400) (2cb8db3)
* **defaults:** limit syntax cost on CmdwinEnter #15401 (622a36b), closes #6289 #6399
* **defaults:** map CTRL-L to search highlights, update diffs #15385 (0aa8128)
* **defaults:** map Y to y$ #13268 (5a111c1), closes #416 #6289
* **defaults:** remove 'options' from viewoptions #15397 (3954537), closes #6289
* **defaults:** set hidden (f6c72b7)
* **defaults:** set nojoinspaces (d417e67)
* **defaults:** switchbuf=uselast #15394 (4ba7495)
* **runtime:** add packages as `"/pack/*/start/*"` patterns to &rtp (9df7e02)
* **startup:** load builtin plugins with --clean #15893 (c7a63f3), closes #15605
* **terminal:** set cursorlineopt=number in terminal mode (#15493) (c61a386)
* **window:** skip non-focusable floats for :windo (#15378) (e8631cb)

PERFORMANCE IMPROVEMENTS

* **api:** avoid spurious allocations when converting small objects (705e8f1)
* **highlight:** use a hashtable for highlight group names (bb4b4d7)
* **lua:** optimize vim.deep_equal #15236 (4b452d4)
* **lua:** don't use regexes inside lua require'mod' (ea2023f), closes #15147 #15497
* **lsp:** improve json deserialization performance (#15854) (912a6e5)
* **map:** reduce double pointer indirection to single pointer indirection (9e651a9)
* **treesitter:** avoid string lookup of highlight name in hot loop (2460f0a)

FIXES

* **:source, nvim_exec:** handle Vimscript line continuations #14809 (6188926), closes #14807
* **:source:** copy curbuf lines to memory before sourcing #15111 (afdc9e6)
* allow str_utfindex second argument to be an explicit nil  (#16448) (512ec46)
* **api:** fix crash after set_option_value_for() #15390 (8b0e6cc), closes #14097 #13577
* **api:** fix nvim_buf_set_extmark (2338345)
* **autocmd:** fix conditions in block_autocmds, unblock_autocmds #15372 (29712ae), closes #6279
* **buffer_updates:** cleanup test behavior (54b2c68)
* **buffer_updates:** handle :delete of the very last line in buffer (8335e26)
* **buffer_updates:** handle :sort of already sorted buffer (ef687d3)
* **buffer_updates:** make `lockmarks` not affect extmarks and buffer updates. fixes #12861 (7d171b1)
* **bufupdates:** send correct updates for visual paste (1423146)
* **build:** add an env var to re-enable the colors (5087347)
* **build:** call find_package(Threads) before using its variables (f446ab3)
* **build:** export symbols on Windows (aa644b7)
* **build:** fix build failure in MinGW (0503e17)
* **build:** make vendored libmpack and libmpack-lua build properly (2a08aef)
* **channel:** throw error if sending to internal channel w/o terminal (3b89fee)
* **checkhealth:** duplicate checks if module name has "-" #15935 (a36c6e5)
* **checkhealth:** mitigate issues with duplicate healthchecks #15919 (acd5e83), closes #15259
* **ci:** disable broken test on openbsd on all CI due to resource constraints (a3e2636)
* **ci:** re-run GHA for ready_for_review events (#15377) (c6ef956)
* **decorations:** crash when :bdelete (extmark_free_all) after clear_namespace (cd353aa), closes #15212
* **defaults:** "syntax sync maxlines=1" on CmdwinEnter #15552 (5f8518b), closes #15401
* **defaults:** do not map Y in visual-mode #15387 (54726e8), closes #13268
* **diagnostic:** allow floats to be focusable (#16093) (427bac6)
* **diagnostic:** change default severity_sort order (938ed45)
* **diagnostic:** clamp line numbers in setqflist and setloclist (5b0d8f8)
* **diagnostic:** correctly handle folder level diagnostics (f87779a)
* **diagnostic:** deepcopy diagnostics before clamping line numbers (2abc799)
* **diagnostic:** do not focus floats in goto functions (#16433) (b5b025f)
* **diagnostic:** don't clamp line numbers in setqflist (0341c68)
* **diagnostic:** don't return nil when callers expect a table (#15765) (057606e)
* **diagnostic:** don't use nil col if missing from qflist (#16357) (5e46f64)
* **diagnostic:** error on invalid severity value (#15965) (d5dd0aa)
* **diagnostic:** fix navigation with diagnostics placed past end of line (34bb5fa)
* **diagnostic:** fix option resolution in open_float (#16229) (fd34784)
* **diagnostic:** fix wrong data type in setqflist() (3fd1450)
* **diagnostic:** get line count per buffer when clamping (c59f200)
* **diagnostic:** handle an unknown or missing client (#16242) (1fdbd29)
* **diagnostic:** handle diagnostics placed past the end of line (#16095) (a2994c8)
* **diagnostic:** make set() go through cache when calling show() (d93f47d)
* **diagnostic:** only update decorations for loaded buffers (#15715) (924e8e4)
* **diagnostic:** preserve fields from LSP diagnostics via user_data (#15735) (17b7968)
* **diagnostic:** remove useless highlight links (#15683) (c13242c), closes #15585
* disable clipboard when test registers (dd63d93)
* **docgen:** add tagfunc.lua (0746f00)
* **doc:** various fixes #15604 (4eb1ebb)
* **eval:** add the vimscript-1 feature to has() (18b32fc)
* **eval:** checking for a non-empty string is too strict (#15987) (1dbbaf8)
* **eval:** fix has('wsl') #16153 (16d06fa), closes #12642 #16143
* **eval:** fixup for empty modifier in fnamemodify (#16368) (a7ad509), closes #16367
* **extmark:** fix missing virt_lines when using id param of set_extmark (995dbd2)
* **extmarks:** splice extmarks on nv_Undo #15920 (e069361)
* **fileio:** replace characters over INT_MAX with U+FFFD (#16354) (a2e5c2f), closes #11877
* **float:** fix potential heap corruption in win_redr_border (de670f3)
* **float:** redraw if w_border_adj changed (7ff1bc1)
* **heath/provider.vim:** using list as string #16007 (5365f24), closes #15988
* **highlight:** remove syncolor.vim, always include syntax colors (9afa0d2), closes #15176 #12573 #15205
* **inccommand:** ignore trailing commands only for *previewed* command #15638 (1f8c91b), closes #8796 #7494
* include ci/ in exported tarball (d6f03aa), closes #15856
* **input:** never reinterpret unmapped ALT- chrods in Terminal mode (#16222) (5ce35ab)
* **input:** resolve isolated (non-ALT/META) mappings #13109 (c4857b6), closes #13042 #13086 #15869
* **jobwait:** always drain process event queues #15402 (3c081d0), closes #15349
* **lsp_spec:** tests depended on previous session (069d1de)
* **lsp:** accept file URIs without a hostname (a2c2a08)
* **lsp:** add done flag to messages returned in util.get_progress_messages() (#15985) (45fa70a)
* **lsp:** add placeholder cancel function (#16189) (4da0351)
* **lsp:** add textDocument/prepareRename to capability map (#15961) (fcc11d5), closes #15899
* **lsp:** adjust legacy show diagnostic functions to use correct scope (#16106) (dc6c9fe)
* **lsp:** allow diagnostic.clear to accept nil bufnr (#15137) (4ed2d4f)
* **lsp:** avoid duplicates in client attached buffers (#16099) (c5525f2)
* **lsp:** avoid serializing boolean as key (#15810) (96614f8)
* **lsp:** change rpc start notify level to warn (#16467) (04c7b55)
* **lsp:** change signature of buf_highlight_references (#16345) (eb3d591)
* **lsp:** correctly parse LSP snippets #15579 (516775e), closes #15522
* **lsp:** default to UTF-16 in make_position_params (2e3a474)
* **lsp:** do not index nil client in progress (#16262) (8f31b21)
* **lsp:** do not invoke handlers for unsupported methods (#15926) (d288daa)
* **lsp:** don't update active_clients on exit_timeout (#16192) (98f5782)
* **lsp:** enable additional capabilities (#15470) (5d63354)
* **lsp:** ensure buffers are re-attached on rename (#16266) (ee3a58d)
* **lsp:** Ensure users get feedback on references/symbols errors or empty results (256570a)
* **lsp:** expose ContentModified error code to callbacks (#15262) (3f09732)
* **lsp:** fix cursor row after textEdits (#16038) (bd2f61c)
* **lsp:** gracefully handle nil workspaceFolders (#16284) (0ecc58c)
* **lsp:** guard textDocument/codeAction command logic #15769 (433bda4)
* **lsp:** improve symbols_to_items performance (#16197) (5ad15c9)
* **lsp:** Include client name in handler error messages (#15227) (24f2b9e)
* **lsp:** pass bufnr for async formatting (#15084) (c31bc6e)
* **lsp:** persist diagnostic config for clients (bcc9ba5)
* **lsp:** prevent double <text> for cached plaintext markup (910967e)
* **lsp:** restore diagnostics extmarks on buffer changes (#15011) (77b33e4)
* **lsp:** rewrite incremental sync (#16252) (2ecf0a4)
* **lsp:** send buffer contents joined on fileformat-specific linebreak (#16334) (134a638)
* **lsp:** send textDocument/didChange for each buffer (#16431) (3451121)
* **lsp:** support duplicate params in signature help (#15032) (9132b76)
* **lsp:** update lsp-handler signature in call_hierarchy (#15738) (8164adc)
* **lsp:** update workspace/applyEdit handler signature (#15573) (3f526fe)
* **lua:** fix vim.deepcopy for metatables & cycled tables (#16435) (eb876a0)
* **lua:** preserve argument lists which are not lists (6896d22)
* **man.vim:** ensure buftype=nofile after :tag or :stag #15675 (29bc648), closes #15650
* **man.vim:** filetype=man is too eager #15488 (2548a9e), closes #15487 #15487
* **mouse:** fix mouse drag positions on multigrid #12667 (0dcfd0e), closes #15091
* **mouse:** correct dragged position in composed layout (810da1a)
* **multigrid:** mouse events crash neovim (28ac6c0)
* **nvim_open_win:** crash if autocmds delete buffer/window #15549 (0c06da1), closes #15548
* **options:** using :set fillchars should clear local value (7528bce)
* prevent K_EVENT from stopping Select mode CTRL-O #15688 (5f144ef)
* **provider:** compare versions as number, not string (python 3.10 support) #15937 (e16adbf), closes #14586
* **screen:** make display_tick monotonic up to 2^64. fixes #16152 (9e88c9c)
* **screen:** missing search highlights when redrawing from timer #15380 (db695cc), closes #13074 #14064
* **shared:** do not treat empty tables as list in deep extend (#15094) (526fc60)
* **sign:** reset auto sign column with minimum in float win minimal style (c8f57f6)
* **startup:** init.lua: set $MYVIMRC to absolute path #15748 (c76cddf)
* **termdebug:** replace mapset with nvim_set_keymap (#15699) (4d7dcbe)
* **termdebug:** replace term_getline with getbufline #15598 (11289ad)
* **terminal:** close without ! if the job is stopped (55defa1), closes #4683
* **terminal:** free terminal if close_buffer() closes a closed terminal (#16264) (14def4d)
* **test/dumplog:** tostring(rv) before formatting as string (ddaa0cc)
* **tests:** use isolated XDG_DATA_HOME in startup tests (8e663e2)
* **treesitter:** do not map hl_group when no mapping is set (f489d98)
* **treesitter:** run predicates more often in iter_matches (458f2aa)
* **tui:** extend smglr ignores to smglp and smgrp (#16239) (3ba800f)
* **tui:** remove obsolete $NVIM detection #15791 (4414584), closes #12937 #11390
* **tutor:** formatting, layout #15098 (c52ec8f), closes #15088
* **ui:** use nowait for q mapping in floating window (#16427) (c132144)
* **v:lua:** fix emsg when calling v:lua directly (da9005a)
* **vim-patch.sh:** run nvim with -u NONE -n #16179 (97ae0ab)
* **vim.opt:** vimL map string values not trimmed (#14982) (4906156)
* **window:** win_close from other tabpage #15454 (90b2da1), closes #15313
* **windowing:** positioning of relative floats (9065730)
Shougo pushed a commit to Shougo/neovim that referenced this pull request Dec 1, 2021
BREAKING CHANGES

* 32-bit windows builds are no longer provided.

* **build deps**: use libuv 1.42.0 upstream for WIN32 (neovim#15889) (f6c0a37), closes neovim#15889
  * removes Windows 7 support
  * removes support for mouse and alternate buffers in TUI for Windows 8 and 8.1

* **lsp/diagnostic:** highlight groups and signs for LSP diagnostics renamed (e.g. `LspDiagnosticsDefaultWarning` to `DiagnosticWarn`) (a5bbb93)

* **diagnostic:** make DiagnosticChanged a first class autocmd (neovim#16098) (150a592), closes neovim#16098
  * `au User LspDiagnosticsChanged` autocommands are not supported. Use the new first-class DiagnosticChanged event instead.

* **lua**: `register_keystroke_callback` => `on_key` (neovim#15460) (69fe427)
  * **note**: this breaking change was included in 0.5.1

FEATURES

* **:source, nvim_exec:** defer script item creation until s:var access (da9b0ab)
* **:source, nvim_exec:** support script-local variables (d4ed51e), closes neovim#13143 neovim#11507
* **lua:** add trimempty optional parameter to vim.split (5fa26e2)
* **lua:** add vim.str_utf_{start,end} (neovim#16129) (2230b57)
* **lua:** add vim.str_utf_pos function (d752cbc)
* **lsp:** aggregate code actions from all clients (neovim#15121) (c36df20)
* **api:** add lua C bindings for xdiff (neovim#14536) (3d3c0c6)
* **api:** evaluate statusline string neovim#16020 (9086938)
* **api:** named marks set, get, delete neovim#15346 (49fdc62)
* **api:** nvim_get_chan_info: include "argv" for jobs neovim#15537 (0603eba), closes neovim#15440
* **api:** win_viewport also sends line_count neovim#15613 (086631c)
* **api:** support :terminal input callback in lua (9e41e82)
* **ci:** add backport PR action (neovim#14766) (6cc456d)
* **decorations:** allow more than one stacked highlight in a virt_text (1495d36)
* **decorations:** support virtual lines (392c658) (8d7816c)
* **diagnostic:** move vim.lsp.diagnostic to vim.diagostic and support other sources (a5bbb93)
* **diagnostic:** add 'prefix' option to open_float (neovim#16321) (3c74ba4)
* **diagnostic:** add option to include diagnostic source (d43151e)
* **diagnostic:** allow 'prefix' option to return highlight (cc48837)
* **diagnostic:** allow customized diagnostic messages (neovim#15742) (d999c96)
* **diagnostic:** match(), tolist(), fromlist() neovim#15704 (e61ea77)
* **diagnostic:** update jumplist on goto_next/prev (neovim#15942) (b55944e)
* **diagnostic:** use `scope = 'line'` by default for `open_float()` (neovim#16456) (217f9f8), closes neovim#16453
* **diagnostic:** support severity_sort (32c0631)
* **checkhealth:** provide function for command line completion (8b43b07)
* **f_chansend:** support Blob data argument (7e9ea08)
* **job:** add parameter to close stdin (eb7f24b)
* **keywordprg:** use :terminal for external commands neovim#15398 (a90513c), closes neovim#2995 neovim#2761
* **lsp:** add 'focus' option to open_floating_preview (neovim#16465) (fff8827)
* **lsp:** add a registry for client side code action commands (6c03601)
* **lsp:** add client command support to codelens (neovim#15820) (19a77cd)
* **lsp:** add codeAction/resolve support (neovim#15818) (ec4731d)
* **lsp:** add exit_timeout flag (neovim#16070) (80456cf)
* **lsp:** add formatexpr (neovim#16186) (52fa1d2)
* **lsp:** add lsp healthcheck (e268026)
* **lsp:** add per-client commands (neovim#16101) (519d8de)
* **lsp:** add tagfunc (neovim#16103) (f940e7a)
* **lsp:** add warning message for large log size (e6777a7)
* **lsp:** allow configuring zindex for floating windows (neovim#15086) (c487a73)
* **lsp:** allow diagnostics to be disabled for a buffer (neovim#15134) (1aeb945)
* **lsp:** allow root_dir to be nil (neovim#15430) (ff0833c)
* **lsp:** highlight active parameter in signature help (neovim#15018) (af26371)
* **lsp:** improve vim.lsp.util.apply_text_edits (neovim#15561) (41cfba6)
* **lsp:** include original request params in handler ctx (187579f)
* **lsp:** jump to diagnostics by position (neovim#14795) (ea39ff5)
* **lsp:** Make line diagnostics display prettier (e43dbfd)
* **lsp:** make list handlers configurable (neovim#15199) (3e00d4f)
* **lsp:** support textDocument/prepareRename (neovim#15514) (c1f573f)
* **lsp:** use uv_spawn to check if server executable (neovim#16430) (1a60580)
* **lsp:** use vim.ui.select() in codelenses (neovim#16004) (e7ea54a)
* **lsp:** utilize textEdit.range for startbyte in omnifunc (neovim#15957) (e9d6f7c)
* **lua:** add lua-cjson as vendored dependency (8decc9f)
* **lua:** add vim.mpack for msgpack support in lua (eaf661d)
* **lua:** allow passing handles to vim.b/w/t (6c5e7bd)
* **lua:** convert binary string with NULs to Blob (de9df82)
* **lua:** document support of packages with v:lua syntax (9dd371b)
* **lua:** enable stack traces in error output (neovim#16228) (03b805a)
* **lua:** expose lua-cjson as vim.json (30fed27)
* **lua:** make vim.mpack support vim.NIL and vim.empty_dict() (0f59666)
* **match:** allow hl group to be defined after :match command (fca52f5)
* **msgpack:** convert Blobs to BIN strings (af6f454)
* **health:** support lua healthchecks (9249dcd), closes neovim#15632
* **shada:** restore Blob globals properly (ef729fb)
* **terminal:** TermClose: set exit code in v:event.status neovim#15406 (50b30de), closes neovim#4713
* **treesitter:** add next, prev sibling method (1400841)
* **treesitter:** allow to set highlight priority for queries (242608e)
* **ui:** add `opt.kind` to `vim.ui.select` (neovim#15838) (7ae86c1)
* **ui:** add vim.ui.input and use in lsp rename (neovim#15959) (16d4af6)
* **ui:** add vim.ui.select and use in code actions (neovim#15771) (63fde08)
* **vim script:** support calling v:lua as a method (b2994e3)

CHANGES

* **defaults:** auto-create backup dir (4600193)
* **defaults:** inccommand=nosplit neovim#15395 (7215d35)
* **defaults:** set undo points in <C-U> and <C-W> (neovim#15400) (2cb8db3)
* **defaults:** limit syntax cost on CmdwinEnter neovim#15401 (622a36b), closes neovim#6289 neovim#6399
* **defaults:** map CTRL-L to search highlights, update diffs neovim#15385 (0aa8128)
* **defaults:** map Y to y$ neovim#13268 (5a111c1), closes neovim#416 neovim#6289
* **defaults:** remove 'options' from viewoptions neovim#15397 (3954537), closes neovim#6289
* **defaults:** set hidden (f6c72b7)
* **defaults:** set nojoinspaces (d417e67)
* **defaults:** switchbuf=uselast neovim#15394 (4ba7495)
* **runtime:** add packages as `"/pack/*/start/*"` patterns to &rtp (9df7e02)
* **startup:** load builtin plugins with --clean neovim#15893 (c7a63f3), closes neovim#15605
* **terminal:** set cursorlineopt=number in terminal mode (neovim#15493) (c61a386)
* **window:** skip non-focusable floats for :windo (neovim#15378) (e8631cb)

PERFORMANCE IMPROVEMENTS

* **api:** avoid spurious allocations when converting small objects (705e8f1)
* **highlight:** use a hashtable for highlight group names (bb4b4d7)
* **lua:** optimize vim.deep_equal neovim#15236 (4b452d4)
* **lua:** don't use regexes inside lua require'mod' (ea2023f), closes neovim#15147 neovim#15497
* **lsp:** improve json deserialization performance (neovim#15854) (912a6e5)
* **map:** reduce double pointer indirection to single pointer indirection (9e651a9)
* **treesitter:** avoid string lookup of highlight name in hot loop (2460f0a)

FIXES

* **:source, nvim_exec:** handle Vimscript line continuations neovim#14809 (6188926), closes neovim#14807
* **:source:** copy curbuf lines to memory before sourcing neovim#15111 (afdc9e6)
* allow str_utfindex second argument to be an explicit nil  (neovim#16448) (512ec46)
* **api:** fix crash after set_option_value_for() neovim#15390 (8b0e6cc), closes neovim#14097 neovim#13577
* **api:** fix nvim_buf_set_extmark (2338345)
* **autocmd:** fix conditions in block_autocmds, unblock_autocmds neovim#15372 (29712ae), closes neovim#6279
* **buffer_updates:** cleanup test behavior (54b2c68)
* **buffer_updates:** handle :delete of the very last line in buffer (8335e26)
* **buffer_updates:** handle :sort of already sorted buffer (ef687d3)
* **buffer_updates:** make `lockmarks` not affect extmarks and buffer updates. fixes neovim#12861 (7d171b1)
* **bufupdates:** send correct updates for visual paste (1423146)
* **build:** add an env var to re-enable the colors (5087347)
* **build:** call find_package(Threads) before using its variables (f446ab3)
* **build:** export symbols on Windows (aa644b7)
* **build:** fix build failure in MinGW (0503e17)
* **build:** make vendored libmpack and libmpack-lua build properly (2a08aef)
* **channel:** throw error if sending to internal channel w/o terminal (3b89fee)
* **checkhealth:** duplicate checks if module name has "-" neovim#15935 (a36c6e5)
* **checkhealth:** mitigate issues with duplicate healthchecks neovim#15919 (acd5e83), closes neovim#15259
* **ci:** disable broken test on openbsd on all CI due to resource constraints (a3e2636)
* **ci:** re-run GHA for ready_for_review events (neovim#15377) (c6ef956)
* **decorations:** crash when :bdelete (extmark_free_all) after clear_namespace (cd353aa), closes neovim#15212
* **defaults:** "syntax sync maxlines=1" on CmdwinEnter neovim#15552 (5f8518b), closes neovim#15401
* **defaults:** do not map Y in visual-mode neovim#15387 (54726e8), closes neovim#13268
* **diagnostic:** allow floats to be focusable (neovim#16093) (427bac6)
* **diagnostic:** change default severity_sort order (938ed45)
* **diagnostic:** clamp line numbers in setqflist and setloclist (5b0d8f8)
* **diagnostic:** correctly handle folder level diagnostics (f87779a)
* **diagnostic:** deepcopy diagnostics before clamping line numbers (2abc799)
* **diagnostic:** do not focus floats in goto functions (neovim#16433) (b5b025f)
* **diagnostic:** don't clamp line numbers in setqflist (0341c68)
* **diagnostic:** don't return nil when callers expect a table (neovim#15765) (057606e)
* **diagnostic:** don't use nil col if missing from qflist (neovim#16357) (5e46f64)
* **diagnostic:** error on invalid severity value (neovim#15965) (d5dd0aa)
* **diagnostic:** fix navigation with diagnostics placed past end of line (34bb5fa)
* **diagnostic:** fix option resolution in open_float (neovim#16229) (fd34784)
* **diagnostic:** fix wrong data type in setqflist() (3fd1450)
* **diagnostic:** get line count per buffer when clamping (c59f200)
* **diagnostic:** handle an unknown or missing client (neovim#16242) (1fdbd29)
* **diagnostic:** handle diagnostics placed past the end of line (neovim#16095) (a2994c8)
* **diagnostic:** make set() go through cache when calling show() (d93f47d)
* **diagnostic:** only update decorations for loaded buffers (neovim#15715) (924e8e4)
* **diagnostic:** preserve fields from LSP diagnostics via user_data (neovim#15735) (17b7968)
* **diagnostic:** remove useless highlight links (neovim#15683) (c13242c), closes neovim#15585
* disable clipboard when test registers (dd63d93)
* **docgen:** add tagfunc.lua (0746f00)
* **doc:** various fixes neovim#15604 (4eb1ebb)
* **eval:** add the vimscript-1 feature to has() (18b32fc)
* **eval:** checking for a non-empty string is too strict (neovim#15987) (1dbbaf8)
* **eval:** fix has('wsl') neovim#16153 (16d06fa), closes neovim#12642 neovim#16143
* **eval:** fixup for empty modifier in fnamemodify (neovim#16368) (a7ad509), closes neovim#16367
* **extmark:** fix missing virt_lines when using id param of set_extmark (995dbd2)
* **extmarks:** splice extmarks on nv_Undo neovim#15920 (e069361)
* **fileio:** replace characters over INT_MAX with U+FFFD (neovim#16354) (a2e5c2f), closes neovim#11877
* **float:** fix potential heap corruption in win_redr_border (de670f3)
* **float:** redraw if w_border_adj changed (7ff1bc1)
* **heath/provider.vim:** using list as string neovim#16007 (5365f24), closes neovim#15988
* **highlight:** remove syncolor.vim, always include syntax colors (9afa0d2), closes neovim#15176 neovim#12573 neovim#15205
* **inccommand:** ignore trailing commands only for *previewed* command neovim#15638 (1f8c91b), closes neovim#8796 neovim#7494
* include ci/ in exported tarball (d6f03aa), closes neovim#15856
* **input:** never reinterpret unmapped ALT- chrods in Terminal mode (neovim#16222) (5ce35ab)
* **input:** resolve isolated (non-ALT/META) mappings neovim#13109 (c4857b6), closes neovim#13042 neovim#13086 neovim#15869
* **jobwait:** always drain process event queues neovim#15402 (3c081d0), closes neovim#15349
* **lsp_spec:** tests depended on previous session (069d1de)
* **lsp:** accept file URIs without a hostname (a2c2a08)
* **lsp:** add done flag to messages returned in util.get_progress_messages() (neovim#15985) (45fa70a)
* **lsp:** add placeholder cancel function (neovim#16189) (4da0351)
* **lsp:** add textDocument/prepareRename to capability map (neovim#15961) (fcc11d5), closes neovim#15899
* **lsp:** adjust legacy show diagnostic functions to use correct scope (neovim#16106) (dc6c9fe)
* **lsp:** allow diagnostic.clear to accept nil bufnr (neovim#15137) (4ed2d4f)
* **lsp:** avoid duplicates in client attached buffers (neovim#16099) (c5525f2)
* **lsp:** avoid serializing boolean as key (neovim#15810) (96614f8)
* **lsp:** change rpc start notify level to warn (neovim#16467) (04c7b55)
* **lsp:** change signature of buf_highlight_references (neovim#16345) (eb3d591)
* **lsp:** correctly parse LSP snippets neovim#15579 (516775e), closes neovim#15522
* **lsp:** default to UTF-16 in make_position_params (2e3a474)
* **lsp:** do not index nil client in progress (neovim#16262) (8f31b21)
* **lsp:** do not invoke handlers for unsupported methods (neovim#15926) (d288daa)
* **lsp:** don't update active_clients on exit_timeout (neovim#16192) (98f5782)
* **lsp:** enable additional capabilities (neovim#15470) (5d63354)
* **lsp:** ensure buffers are re-attached on rename (neovim#16266) (ee3a58d)
* **lsp:** Ensure users get feedback on references/symbols errors or empty results (256570a)
* **lsp:** expose ContentModified error code to callbacks (neovim#15262) (3f09732)
* **lsp:** fix cursor row after textEdits (neovim#16038) (bd2f61c)
* **lsp:** gracefully handle nil workspaceFolders (neovim#16284) (0ecc58c)
* **lsp:** guard textDocument/codeAction command logic neovim#15769 (433bda4)
* **lsp:** improve symbols_to_items performance (neovim#16197) (5ad15c9)
* **lsp:** Include client name in handler error messages (neovim#15227) (24f2b9e)
* **lsp:** pass bufnr for async formatting (neovim#15084) (c31bc6e)
* **lsp:** persist diagnostic config for clients (bcc9ba5)
* **lsp:** prevent double <text> for cached plaintext markup (910967e)
* **lsp:** restore diagnostics extmarks on buffer changes (neovim#15011) (77b33e4)
* **lsp:** rewrite incremental sync (neovim#16252) (2ecf0a4)
* **lsp:** send buffer contents joined on fileformat-specific linebreak (neovim#16334) (134a638)
* **lsp:** send textDocument/didChange for each buffer (neovim#16431) (3451121)
* **lsp:** support duplicate params in signature help (neovim#15032) (9132b76)
* **lsp:** update lsp-handler signature in call_hierarchy (neovim#15738) (8164adc)
* **lsp:** update workspace/applyEdit handler signature (neovim#15573) (3f526fe)
* **lua:** fix vim.deepcopy for metatables & cycled tables (neovim#16435) (eb876a0)
* **lua:** preserve argument lists which are not lists (6896d22)
* **man.vim:** ensure buftype=nofile after :tag or :stag neovim#15675 (29bc648), closes neovim#15650
* **man.vim:** filetype=man is too eager neovim#15488 (2548a9e), closes neovim#15487 neovim#15487
* **mouse:** fix mouse drag positions on multigrid neovim#12667 (0dcfd0e), closes neovim#15091
* **mouse:** correct dragged position in composed layout (810da1a)
* **multigrid:** mouse events crash neovim (28ac6c0)
* **nvim_open_win:** crash if autocmds delete buffer/window neovim#15549 (0c06da1), closes neovim#15548
* **options:** using :set fillchars should clear local value (7528bce)
* prevent K_EVENT from stopping Select mode CTRL-O neovim#15688 (5f144ef)
* **provider:** compare versions as number, not string (python 3.10 support) neovim#15937 (e16adbf), closes neovim#14586
* **screen:** make display_tick monotonic up to 2^64. fixes neovim#16152 (9e88c9c)
* **screen:** missing search highlights when redrawing from timer neovim#15380 (db695cc), closes neovim#13074 neovim#14064
* **shared:** do not treat empty tables as list in deep extend (neovim#15094) (526fc60)
* **sign:** reset auto sign column with minimum in float win minimal style (c8f57f6)
* **startup:** init.lua: set $MYVIMRC to absolute path neovim#15748 (c76cddf)
* **termdebug:** replace mapset with nvim_set_keymap (neovim#15699) (4d7dcbe)
* **termdebug:** replace term_getline with getbufline neovim#15598 (11289ad)
* **terminal:** close without ! if the job is stopped (55defa1), closes neovim#4683
* **terminal:** free terminal if close_buffer() closes a closed terminal (neovim#16264) (14def4d)
* **test/dumplog:** tostring(rv) before formatting as string (ddaa0cc)
* **tests:** use isolated XDG_DATA_HOME in startup tests (8e663e2)
* **treesitter:** do not map hl_group when no mapping is set (f489d98)
* **treesitter:** run predicates more often in iter_matches (458f2aa)
* **tui:** extend smglr ignores to smglp and smgrp (neovim#16239) (3ba800f)
* **tui:** remove obsolete $NVIM detection neovim#15791 (4414584), closes neovim#12937 neovim#11390
* **tutor:** formatting, layout neovim#15098 (c52ec8f), closes neovim#15088
* **ui:** use nowait for q mapping in floating window (neovim#16427) (c132144)
* **v:lua:** fix emsg when calling v:lua directly (da9005a)
* **vim-patch.sh:** run nvim with -u NONE -n neovim#16179 (97ae0ab)
* **vim.opt:** vimL map string values not trimmed (neovim#14982) (4906156)
* **window:** win_close from other tabpage neovim#15454 (90b2da1), closes neovim#15313
* **windowing:** positioning of relative floats (9065730)
lewis6991 pushed a commit to lewis6991/neovim that referenced this pull request Dec 12, 2021
…#15094)

An empty table was previously always treated as a list, which means that
while merging tables, whenever an empty table was encountered it would
  always truncate any table on the left.

`vim.tbl_deep_extend("force", { b = { a = 1 } }, { b = {} })`

Before: `{ b = {} }`
After: `{ b = { a = 1 } }`
@dundargoc dundargoc removed the request for review from tjdevries May 19, 2022 09:15
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