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* feat(commands): add clear-register typable command (#5695)jorge2023-04-27
| | | Co-authored-by: Jorge <chorcheus@tutanota.com>
* return early if soft wrap is invalid (#6856)ymgyt2023-04-23
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* Revert "Fix #6605: Remove soft-wrap.enable option wrapping. (#6656)"Blaž Hrastnik2023-04-08
| | | | | | This caused a bug that would ignore the global config. This reverts commit af88a3c15cc4ddbb1e2f2ea6492868ffb8aba40b.
* Fix #6605: Remove soft-wrap.enable option wrapping. (#6656)gibbz002023-04-08
| | | Co-authored-by: gibbz00 <gabrielhansson@gmail.com>
* Fix typos (#6643)Daniel Sedlak2023-04-07
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* Canonicalize paths before stripping current dir as prefix (#6290)jazzfool2023-03-30
| | | Co-authored-by: jazzfool <shamoslover69@gmail.com>
* add workspace config and manual LSP root managementPascal Kuthe2023-03-29
| | | | | | | | | | fixup documentation Co-authored-by: LeoniePhiline <22329650+LeoniePhiline@users.noreply.github.com> fixup typo Co-authored-by: LeoniePhiline <22329650+LeoniePhiline@users.noreply.github.com>
* Fix clippy lints (#6454)Philipp Mildenberger2023-03-27
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* respect line annotations in char_idx_at_visual_row_offsetPascal Kuthe2023-03-27
| | | | | | | | | | | | | | char_idx_at_visual_row_offset asssumed that a single line/block break always corresponded to a vertical offset of 1. However conceal can hide the line break (in which case the certical offset would be 0) and line annotations (or softwrapped inlay hints at the end of the line) can insert addtional vertical lines. To correctly account for these cases we simply compute the visual offset of the start of the next block from the previous block instead of the visual offset of the block end. This means that the line breaks at the end of the block (however many there may be) are automatically included and we don't need to manually add 1 to the `row_offset` anymore.
* use partition_point instead of binary_search_byPascal Kuthe2023-03-27
| | | | | | | | Using `partition_point` ensures we always find the first entry. With binary search it is "random" (deterministic but implementation specific) which index is retruned if there are multiple equal elements. `partition_point` was added to the standard library to cover extactly the usecase here.
* fix view anchors not at start of a visual linePascal Kuthe2023-03-27
| | | | | | | | | | | | | | | | | | | | | The top of a view is marked by a char idx anchor. That char idx is usually the first character of the visual line it's on. We use a char index instead of a line index because the view may start in the middle of a line with soft wrapping. However, it's possible to temporarily endup in a state where this anchor is not the first character of the first visual line. This is pretty rare because edits usually happen inside/after the view. In most cases we handle this case correctly. However, if the cursor is before the anchor (but still in view) there can be crashes or visual artifacts. This is caused by the fact that visual_offset_from_anchor (and the positioning code in view.rs) incorrectly assumed that the (cursor) position is always after the view anchor if the cursor is in view. But if the anchor is not the first character of the first visual line this is not the case anymore. In that case crashes and visual artifacts are possible. This commit fixes that problem by changing `visual_offset_from_anchor` (and callsites) to properly consider that case.
* build(deps): bump bitflags from 1.3.2 to 2.0.2 (#6387)dependabot[bot]2023-03-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * build(deps): bump bitflags from 1.3.2 to 2.0.2 Bumps [bitflags](https://github.com/bitflags/bitflags) from 1.3.2 to 2.0.2. - [Release notes](https://github.com/bitflags/bitflags/releases) - [Changelog](https://github.com/bitflags/bitflags/blob/main/CHANGELOG.md) - [Commits](https://github.com/bitflags/bitflags/compare/1.3.2...2.0.2) --- updated-dependencies: - dependency-name: bitflags dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com> * deps: Resolve bitflags 2.0 breaking changes Bitflags 2.0 release made some breaking changes requiring some small changes to the Helix codebase. Almost all of the necessary changes are to manually `#[derive(..)]` trait implementations which are no longer automatically derived for all bitflags. All of these were previously automatically derived: #[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Debug, Clone, Copy] I have derived the minimum traits for each bitflag type. The other change was to the `.bits` field. This is now a `.bits()` method so the usage of this has been updated in the `Borders` type. --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* fix test::plainSkyler Hawthorne2023-03-20
| | | | test::plain uses char indices when it should use byte indices
* Allow explicit newlines in test DSLSkyler Hawthorne2023-03-20
| | | | | | | | | | | | | The current test DSL currently has no way to express being at the end of a line, save for putting an explicit LF or CRLF inside the `#[|]#`. The problem with this approach is that it can add unintended extra new lines if used in conjunction with raw strings, which insert newlines for you. This is a simple attempt to mitigate this problem. If there is an explicit newline character at the end of the selection, and then it is immediately followed by the same newline character at the right end of the selection, this following newline is removed. This way, one can express a cursor at the end of a line explicitly.
* Fix indentation level calculation for lines mixing tabs and spaces (#6278)Stanisław Borowy2023-03-12
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* Feat: LSP Type Hints (#5934)Poliorcetics2023-03-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * misc: missing inline, outdated link * doc: Add new theme keys and config option to book * fix: don't panic in Tree::try_get(view_id) Necessary for later, where we could be receiving an LSP response for a closed window, in which case we don't want to crash while checking for its existence * fix: reset idle timer on all mouse events * refacto: Introduce Overlay::new and InlineAnnotation::new * refacto: extract make_job_callback from Context::callback * feat: add LSP display_inlay_hint option to config * feat: communicate inlay hints support capabilities of helix to LSP server * feat: Add function to request range of inlay hint from LSP * feat: Save inlay hints in document, per view * feat: Update inlay hints on document changes * feat: Compute inlay hints on idle timeout * nit: Add todo's about inlay hints for later * fix: compute text annotations for current view in view.rs, not document.rs * doc: Improve Document::text_annotations() description * nit: getters don't use 'get_' in front * fix: Drop inlay hints annotations on config refresh if necessary * fix: padding theming for LSP inlay hints * fix: tracking of outdated inlay hints should not be dependant on document revision (because of undos and such) * fix: follow LSP spec and don't highlight padding as virtual text * config: add some LSP inlay hint configs
* Add API to create a Transaction from potentially overlapping changesPascal Kuthe2023-03-10
| | | | | | | | | | | | This commit adds new functions to `Transaction` that allow creating edits that might potentially overlap. Any change that overlaps previous changes is ignored. Furthermore, a utility method is added that also drops selections associated with dropped changes (for transactions that are created from a selection). This is needed to avoid crashes when applying multicursor autocompletions, as the edit from a previous cursor may overlap with the next cursor/edit.
* Add IntoIterator implementation for SelectionPascal Kuthe2023-03-10
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* Fix `shrink_selection` with multiple cursors. (#6093)gibbz002023-03-09
| | | | | | | | | | | * Fix #6092 Cause were some incorrect assumptions that missed an edge case in the `Selection.contains()` calculation. Tests were added accordingly. * Fix Selection.contains() edge-case handling. Removing the len check short-circuit was the only thing needed as pointed out by @dead10ck.
* Add test cases for existing pair matching logic. (#6027)Kyle Smith2023-03-08
| | | | | * Add test cases for existing pair matching logic. * fix clippy
* Softwrapping improvements (#5893)Clément Delafargue2023-03-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * use max_line_width + 1 during softwrap to account for newline char Helix softwrap implementation always wraps lines so that the newline character doesn't get cut off so he line wraps one chars earlier then in other editors. This is necessary, because newline chars are always selecatble in helix and must never be hidden. However That means that `max_line_width` currently wraps one char earlier than expected. The typical definition of line width does not include the newline character and other helix commands like `:reflow` also don't count the newline character here. This commit makes softwrap use `max_line_width + 1` instead of `max_line_width` to correct the impedance missmatch. * fix typos Co-authored-by: Jonathan Lebon <jonathan@jlebon.com> * Add text-width to config.toml * text-width: update setting documentation * rename leftover config item * remove leftover max-line-length occurrences * Make `text-width` optional in editor config When it was only used for `:reflow` it made sense to have a default value set to `80`, but now that soft-wrapping uses this setting, keeping a default set to `80` would make soft-wrapping behave more aggressively. * Allow softwrapping to ignore `text-width` Softwrapping wraps by default to the viewport width or a configured `text-width` (whichever's smaller). In some cases we only want to set `text-width` to use for hard-wrapping and let longer lines flow if they have enough space. This setting allows that. * Revert "Make `text-width` optional in editor config" This reverts commit b247d526d69adf41434b6fd9c4983369c785aa22. * soft-wrap: allow per-language overrides * Update book/src/configuration.md Co-authored-by: Pascal Kuthe <pascal.kuthe@semimod.de> * Update book/src/languages.md Co-authored-by: Pascal Kuthe <pascal.kuthe@semimod.de> * Update book/src/configuration.md Co-authored-by: Pascal Kuthe <pascal.kuthe@semimod.de> --------- Co-authored-by: Pascal Kuthe <pascal.kuthe@semimod.de> Co-authored-by: Jonathan Lebon <jonathan@jlebon.com> Co-authored-by: Alex Boehm <alexb@ozrunways.com> Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
* Correctly handle multiple cursors with LSP snippetsUrgau2023-03-08
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* Doc string fix in selection.rs (#6077)Alexandr2023-02-22
| | | | | | | | | | | | | * Doc string fix Delete duplicate `the` * selection.rs doc string wording * Remove extra whitespace at end of doc text --------- Co-authored-by: Ivan Tham <pickfire@riseup.net>
* Replace incorrect usages of tab_width with indent_width. (#5918)Triton1712023-02-16
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* Prevent a panic when uncommenting a line with only a comment token (#5933)Mike Trinkala2023-02-12
| | | | | | | | | | | | | | | Open a new document `test.rs` and type the following: `di//<esc><C-c>` The margin calculation pushes the range out of bounds for the comment marker when there are no characters (newline) after it. thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Char range out of bounds: char range 0..3, Rope/RopeSlice char length 2', ropey-1.6.0/src/rope.rs:546:37 The debug build catches the error in the transaction: thread 'main' panicked at 'attempt to subtract with overflow', helix-core/src/transaction.rs:503:26
* Make `m` textobject look for pairs enclosing selections (#3344)Daniel S Poulin2023-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Make `m` textobject look for pairs enclosing selections Right now, this textobject only looks for pairs that surround the cursor. This ensures that the pair found encloses each selection, which is likely to be intuitively what is expected of this textobject. * Simplification of match code Co-authored-by: Michael Davis <mcarsondavis@gmail.com> * Adjust logic for ensuring surround range encloses selection Prior, it was missing the case where the start of the selection came before the opening brace. We also had an off-by-one error where if the end of the selection was on the closing brace it would not work. * Refactor to search for the open pair specifically to avoid edge cases * Adjust wording of autoinfo to reflect new functionality * Implement tests for surround functionality in new integration style * Fix handling of skip values * Fix out of bounds error * Add `ma` version of tests * Fix formatting of tests * Reduce indentation levels for readability, and update comments * Preserve each selection's direction with enclosing pair surround * Add test case for multiple cursors resulting in overlap * Mark known failures as TODO * Make tests multi-threaded or they fail * Cargo fmt * Fix typos in integration test comments --------- Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* Fix new clippy lints (#5892)Pascal Kuthe2023-02-09
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* properly handle LSP position encoding (#5711)Pascal Kuthe2023-02-09
| | | | | | | | | | | | | * properly handle LSP position encoding * add debug assertion to Transaction::change * Apply suggestions from code review Co-authored-by: Michael Davis <mcarsondavis@gmail.com> --------- Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* Short-circuit the word and treesitter object movement commands (#5851)Mike Trinkala2023-02-07
| | | | | | | | | The loop always iterates the number of times the user specified even if the beginning/end of the document is reached. For an extreme demonstration try the following commands, Helix will hang for several seconds. 100000000w 100000000]c
* Fix utf8 length handling for shellwords (#5738)Mike Trinkala2023-02-01
| | | | | | | If the last argument to shellwords ends in a multibyte utf8 character the entire argument will be dropped. e.g. `:sh echo test1 test2𒀀` will only output `test1` Add additional tests based on the code review feedback
* Fix initial highlight layer sort order (#5196)Michael Davis2023-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The purpose of this change is to remove the mutable self borrow on `HighlightIterLayer::sort_key` so that we can sort layers with the correct ordering using the `Vec::sort` function family. `HighlightIterLayer::sort_key` needs `&mut self` since it calls `Peekable::peek` which needs `&mut self`. `Vec::sort` functions only give immutable borrows of the elements to ensure the correctness of the sort. We could instead approach this by creating an eager Peekable and using that instead of `std::iter::Peekable` to wrap `QueryCaptures`: ```rust struct EagerPeekable<I: Iterator> { iter: I, peeked: Option<I::Item>, } impl<I: Iterator> EagerPeekable<I> { fn new(mut iter: I) -> Self { let peeked = iter.next(); Self { iter, peeked } } fn peek(&self) -> Option<&I::Item> { self.peeked.as_ref() } } impl<I: Iterator> Iterator for EagerPeekable<I> { type Item = I::Item; fn next(&mut self) -> Option<Self::Item> { std::mem::replace(&mut self.peeked, self.iter.next()) } } ``` This would be a cleaner approach (notice how `EagerPeekable::peek` takes `&self` rather than `&mut self`), however this doesn't work in practice because the Items emitted by the `tree_sitter::QueryCaptures` Iterator must be consumed before the next Item is returned. `Iterator::next` on `tree_sitter::QueryCaptures` modifies the `QueryMatch` returned by the last call of `next`. This behavior is not currently reflected in the lifetimes/structure of `QueryCaptures`. This fixes an issue with layers being out of order when using combined injections since the old code only checked the first range in the layer. Layers being out of order could cause missing highlights for combined-injections content.
* rework positioning/rendering and enable softwrap/virtual text (#5420)Pascal Kuthe2023-01-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * rework positioning/rendering, enables softwrap/virtual text This commit is a large rework of the core text positioning and rendering code in helix to remove the assumption that on-screen columns/lines correspond to text columns/lines. A generic `DocFormatter` is introduced that positions graphemes on and is used both for rendering and for movements/scrolling. Both virtual text support (inline, grapheme overlay and multi-line) and a capable softwrap implementation is included. fix picker highlight cleanup doc formatter, use word bondaries for wrapping make visual vertical movement a seperate commnad estimate line gutter width to improve performance cache cursor position cleanup and optimize doc formatter cleanup documentation fix typos Co-authored-by: Daniel Hines <d4hines@gmail.com> update documentation fix panic in last_visual_line funciton improve soft-wrap documentation add extend_visual_line_up/down commands fix non-visual vertical movement streamline virtual text highlighting, add softwrap indicator fix cursor position if softwrap is disabled improve documentation of text_annotations module avoid crashes if view anchor is out of bounds fix: consider horizontal offset when traslation char_idx -> vpos improve default configuration fix: mixed up horizontal and vertical offset reset view position after config reload apply suggestions from review disabled softwrap for very small screens to avoid endless spin fix wrap_indicator setting fix bar cursor disappearring on the EOF character add keybinding for linewise vertical movement fix: inconsistent gutter highlights improve virtual text API make scope idx lookup more ergonomic allow overlapping overlays correctly track char_pos for virtual text adjust configuration deprecate old position fucntions fix infinite loop in highlight lookup fix gutter style fix formatting document max-line-width interaction with softwrap change wrap-indicator example to use empty string fix: rare panic when view is in invalid state (bis) * Apply suggestions from code review Co-authored-by: Michael Davis <mcarsondavis@gmail.com> * improve documentation for positoning functions * simplify tests * fix documentation of Grapheme::width * Apply suggestions from code review Co-authored-by: Michael Davis <mcarsondavis@gmail.com> * add explicit drop invocation * Add explicit MoveFn type alias * add docuntation to Editor::cursor_cache * fix a few typos * explain use of allow(deprecated) * make gj and gk extend in select mode * remove unneded debug and TODO * mark tab_width_at #[inline] * add fast-path to move_vertically_visual in case softwrap is disabled * rename first_line to first_visual_line * simplify duplicate if/else --------- Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* Separate jump behavior from increment/decrement (#4123)greg-enbala2023-01-16
| | | | | | | | | | | | | | increment/decrement (C-a/C-x) had some buggy behavior where selections could be offset incorrectly or the editor could panic with some edits that changed the number of characters in a number or date. These stemmed from the automatic jumping behavior which attempted to find the next date or integer to increment. The jumping behavior also complicated the code quite a bit and made the behavior somewhat difficult to predict when using many cursors. This change removes the automatic jumping behavior and only increments or decrements when the full text in a range of a selection is a number or date. This simplifies the code and fixes the panics and buggy behaviors from changing the number of characters.
* Fix erroneous indent between closers of auto-pairs (#5330)Triton1712022-12-29
| | | inserting a newline between 2 closers of an auto-pair.
* Add command to merge consecutive ranges in selection (#5047)DylanBulfin2022-12-23
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* properly handle detachted git worktrees (#5097)Pascal Kuthe2022-12-11
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* allow specifying environment for language servers in language.toml (#4004)TotalKrill2022-12-09
| | | | | Signed-off-by: Stephen Wakely <fungus.humungus@gmail.com> Co-authored-by: Stephen Wakely <fungus.humungus@gmail.com> Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
* Fix transaction composition order in History::changes_since (#4981)Michael Davis2022-12-03
| | | | | | | | | | | * Add a undo/redo split test case for crossing branches * history: Switch up/down transaction chaining order The old code tends to work in practice because, usually, either up_txns or down_txns are empty. When both have contents though, we can run into a panic trying to compose them all since they will disagree on the length of the text. This fixes the panic test case in the parent commit.
* feat(lsp): add support for lsp Diagnostic{}.data (#4935)sigmaSd2022-12-02
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* Show (git) diff signs in gutter (#3890)Pascal Kuthe2022-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Show (git) diff signs in gutter (#3890) Avoid string allocation when git diffing Incrementally diff using changesets refactor diffs to be provider indepndent and improve git implementation remove dependency on zlib-ng switch to asynchronus diffing with similar Update helix-vcs/Cargo.toml fix toml formatting Co-authored-by: Ivan Tham <pickfire@riseup.net> fix typo in documentation use ropey reexpors from helix-core fix crash when creating new file remove useless use if io::Cursor fix spelling mistakes implement suggested improvement to repository loading improve git test isolation remove lefover comments Co-authored-by: univerz <univerz@fu-solution.com> fixed spelling mistake minor cosmetic changes fix: set self.differ to None if decoding the diff_base fails fixup formatting Co-authored-by: Ivan Tham <pickfire@riseup.net> reload diff_base when file is reloaded from disk switch to imara-diff Fixup formatting Co-authored-by: Blaž Hrastnik <blaz@mxxn.io> Redraw buffer whenever a diff is updated. Only store hunks instead of changes for individual lines to easily allow jumping between them Update to latest gitoxide version Change default diff gutter position Only update gutter after timeout * update diff gutter synchronously, with a timeout * Apply suggestions from code review Co-authored-by: Blaž Hrastnik <blaz@mxxn.io> Co-authored-by: Michael Davis <mcarsondavis@gmail.com> * address review comments and ensure lock is always aquired * remove configuration for redraw timeout Co-authored-by: Blaž Hrastnik <blaz@mxxn.io> Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* Use lowest common ancestor search in History::changes_sinceMichael Davis2022-11-29
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* delete outdated reference to cessen/ropey#25 (#4928)Kirawi2022-11-29
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* Significantly improve performance of `:reload` (#4457)Pascal Kuthe2022-11-28
| | | | | * bump ropey to 1.5.1-alpha * significantly improve performance of :reload
* Follow parent links when calculating changes since a revisionMichael Davis2022-11-24
| | | | | | The 'revisions' field on History can't be treated as linear: each Revision in the revisions Vec has a parent link and an optional child link. We can follow those to unroll the recent history.
* Apply inversions to Views on undo/redoMichael Davis2022-11-24
| | | | | | | | When using undo/redo, the history revision can be decremented. In that case we should apply the inversions since the given revision in History::changes_since. This prevents panics with jumplist operations when a session uses undo/redo to move the jumplist selection outside of the document.
* Apply transactions to all views (#4733)Michael Davis2022-11-23
| | | | | | | | | | | | | | | | | * Add a test case for updating jumplists across windows * Apply transactions to all views on history changes This ensures that jumplist selections follow changes in documents, even when there are multiple views (for example a split where both windows edit the same document). * Leave TODOs for cleaning up View::apply * Use Iterator::reduce to compose history transactions Co-authored-by: Blaž Hrastnik <blaz@mxxn.io> Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
* significantly improve treesitter performance while editing large files (#4716)Pascal Kuthe2022-11-22
| | | | | | | | | | | * significantly improve treesitter performance while editing large files * Apply stylistic suggestions from code review Co-authored-by: Michael Davis <mcarsondavis@gmail.com> * use PartialEq and Hash instead of a freestanding function Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* Bump TREE_SITTER_MATCH_LIMIT to 256 (#4830)Michael Davis2022-11-21
| | | | | The limit of 64 breaks some highlighting in Erlang files with complicated record definitions. Bumping to 256 seems to work on all files I have seen.
* Use TreeCursor to pretty-print :tree-sitter-subtree (#4606)Michael Davis2022-11-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current `:tree-sitter-subtree` has a bug for field-names when the field name belongs to an unnamed child node. Take this ruby example: def self.method_name true end The subtree given by tree-sitter-cli is: (singleton_method [2, 0] - [4, 3] object: (self [2, 4] - [2, 8]) name: (identifier [2, 9] - [2, 20]) body: (body_statement [3, 2] - [3, 6] (true [3, 2] - [3, 6]))) But the `:tree-sitter-subtree` output was (singleton_method object: (self) body: (identifier) (body_statement (true))) The `singleton_method` rule defines the `name` and `body` fields in an unnamed helper rule `_method_rest` and the old implementation of `pretty_print_tree_impl` would pass the `field_name` down from the named `singleton_method` node. To fix it we switch to the [TreeCursor] API which is recommended by the tree-sitter docs for traversing the tree. `TreeCursor::field_name` accurately determines the field name for the current cursor position even when the node is unnamed. [TreeCursor]: https://docs.rs/tree-sitter/0.20.9/tree_sitter/struct.TreeCursor.html
* Capture word parts while calculating shellwords (#4632)Michael Davis2022-11-17
| | | | | | | | | | | | | | | | | | | This fixes an edge case for completing shellwords. With a file "a b.txt" in the current directory, the sequence `:open a\<tab>` will result in the prompt containing `:open aa\ b.txt`. This is because the length of the input which is trimmed when replacing with completion is calculated on the part of the input which is parsed by shellwords and then escaped (in a separate operation), which is lossy. In this case it loses the trailing backslash. The fix provided here refactors shellwords to track both the _words_ (shellwords with quotes and escapes resolved) and the _parts_ (chunks of the input which turned into each word, with separating whitespace removed). When calculating how much of the input to delete when replacing with the completion item, we now use the length of the last part. This also allows us to eliminate the duplicate work done in the `ends_with_whitespace` check.