Add Vim indent/dedent operators (< and >) to the code editor

[warp-dev-github-integration]

Description

Adds Vim-style indent (>) and dedent (<) operators to the code editor only (not the terminal command input), per APP-4963. This update also addresses all review feedback from the first review cycle.

• Shared parser (crates/vim): adds VimOperator::Indent/Dedent and recognizes </> as normal-mode operators — supporting the doubled line forms (>>/<<), operator + motion, text objects, and counts (e.g. 2>>, 3>j, >G, >w) — and as visual-mode operators (V>, v<). Indent/dedent are now included in the . (dot-repeat) machinery, so . replays the last indent/dedent like other operators.
• Code editor (CodeEditorView): the operation and visual_operator handlers route Indent/Dedent to the existing CodeEditorModel::indent(shift, ctx) primitive (the same one Tab/Shift-Tab use; shift=true is dedent). Indent operators are linewise, so the linewise selection excludes the trailing newline (so the shift never advances onto an extra line) and only adjusts leading indentation; the cursor lands on the first non-whitespace of the affected line, matching existing linewise operators like gc.
• Terminal command-input EditorView: </> are a true no-op here. The shared VimFSA gates the indent/dedent operators behind a per-VimModel flag (indent_operators_enabled, default false); only the code editor enables it, so the terminal's FSA never enters operator-pending mode for </> and never consumes the following keystroke. The terminal's operation/visual_operator Indent/Dedent arms are retained only for match exhaustiveness.

Review rework (cycle 1)

• Scope violation (terminal command-input): </> previously entered operator-pending in the shared FSA for every consumer, swallowing the next keystroke in the terminal before its no-op arm ran. Fixed by gating the operators on the VimModel flag so the terminal's FSA treats </> as a true no-op (fall-through), restoring the terminal's pre-feature behavior.
• Dot-repeat: for_dot_repeat now persists Indent/Dedent operations, so . repeats them.
• Formatting/CI: ran cargo fmt --all (repo config); cargo fmt --all -- --check now passes on the changed app files.
• Multi-line indent test expectations: rewrote the >j, 2>>, >G, visual V>, and Vj> app tests with clean, explicit input/expected strings. The prior .unindent()-based expectations were ambiguous/incorrect (unindent ignores the first line when computing common indentation); every affected line now clearly remains indented.

Linked Issue

• APP-4963 — https://linear.app/warpdotdev/issue/APP-4963/implement-vim-indent-operators-and-in-the-code-editor

Verification

Regression tests added:

• Shared FSA (crates/vim/src/vim_tests.rs): >>, <<, >j, >w, >G, 2>>, 3>j, visual V>/v<; indent/dedent dot-repeat (>> then ., << then .); and disabled-operator (terminal) no-op behavior (> alone, >>, >j not consuming the motion, visual > staying visual).
• Code editor (app/src/code/editor/view/vim_handler_tests.rs): >>, <<, dedent at column zero (no-op), one-unit dedent, non-leading text preserved, >j, 2>>, >G, visual V>/V</Vj>, u undo, and indent dot-repeat (>> then move + .).

Deterministic checks run in-sandbox (this rework):

• cargo nextest run -p vim → 72 passed, 0 failed (includes the new dot-repeat and disabled-behavior regression tests).
• cargo clippy -p vim --all-targets --tests -- -D warnings → clean.
• cargo fmt --all -- --check (repo config: imports_granularity=Module, group_imports=StdExternalCrate) → clean.

Sandbox limitation (requires a higher-memory machine before merge)

This PR was prepared in a memory-constrained cloud sandbox (3.9 GB RAM, no swap). The full warp (app) crate could not be compiled here — cargo check -p warp --lib -j 1 (and the same with CARGO_PROFILE_DEV_DEBUG=0) is OOM-killed (SIGKILL) by the kernel during rustc on the app lib, identical to the prior cycle. As a result, the following were not run in-sandbox and are NOT claimed to pass:

• The code-editor unit tests in app/src/code/editor/view/vim_handler_tests.rs (including the new dot-repeat test and the corrected multi-line indent expectations).
• ./script/presubmit (which requires the app crate) and cargo clippy -p warp --all-targets.
• Visual screenshot proof — the Warp GUI cannot be built/run here, so computer-use screenshots could not be captured. This is an environmental limitation, not a code defect; the change is user-facing (code editor Vim mode) and visual proof should be captured on a higher-memory machine.

Before merging, please run on a higher-memory machine:

• cargo nextest run -p warp test_vim_ (the code-editor Vim tests, including test_vim_indent_dot_repeat_repeats_last_indent and the corrected >j/2>>/>G/V>/Vj> expectations).
• cargo clippy -p warp --all-targets --tests -- -D warnings and ./script/presubmit.
• Manually exercise >>, <<, >j, 2>>, >G, V>, V<, and . (dot-repeat) in the code editor with Vim mode on, and confirm the terminal command input is unaffected by </>.

The editor wiring mirrors the existing, proven gc/ToggleComment operator (same selection_change + primitive-call + cursor-placement shape), and the app diff was self-reviewed for type/exhaustiveness correctness.

Screenshots / Videos

Outstanding — see the sandbox limitation note above (the GUI cannot be built/run in this 3.9 GB sandbox).

Agent Mode

• Warp Agent Mode - This PR was created via Warp's AI Agent Mode

Originating thread: https://linear.app/warpdotdev/issue/APP-4963/implement-vim-indent-operators-and-in-the-code-editor

Conversation: https://staging.warp.dev/conversation/1ff09567-30d8-497a-b15c-ce10d3a93c4b
Run: https://oz.staging.warp.dev/runs/019f95dd-e7ec-7af8-a7a9-31b41b29ce67

This PR was generated with Oz.

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Overview

This PR adds Vim </> indent and dedent operators to the shared Vim parser and wires them into the code editor, with terminal command-input handlers intended to remain no-op.

Concerns

• The shared FSA now recognizes </> for every Vim consumer, so terminal command input can enter operator-pending mode and consume the next key even though the terminal handler later no-ops the operation. That changes the terminal surface despite the PR being code-editor-only.
• Several added app-level assertions appear to expect only the first line to be indented because unindent ignores the first line when computing common indentation; the multi-line operator tests need to assert all affected lines are shifted.
• This is a user-facing code-editor Vim behavior change, and the PR description does not include screenshots or a screen recording demonstrating the feature end to end. Per repo guidance, please attach visual evidence before merge.

Verdict

Found: 0 critical, 3 important, 0 suggestions

Request changes

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[warp-dev-github-integration]

Overview

Reviewed PR #14268 for APP-4963 against the ticket criteria: Vim </> operators in the code editor only, doubled operators, motions/counts, visual selections, dot-repeat/undo behavior, and unchanged terminal command-input behavior. The parser-focused tests reported by the PR cover the new event shapes, but the acceptance gate is not complete and one required behavior is missing in the implementation.

Concerns

• [BLOCKING] Dot-repeat is not implemented for the new indent/dedent operations. The for_dot_repeat match only stores Change and Delete operations; Indent and Dedent fall through to None. After >>, <<, or an indent motion, pressing . therefore does not replay that indent operation (and may replay an older operation instead). See the inline comment at the new operator mapping.
• [BLOCKING] The repository formatting gate fails on this head. cargo fmt --all -- --check reproduces rustfmt diffs in the changed app/src/code/editor/model.rs and app/src/code/editor/view/vim_handler.rs lines. The PR's cargo fmt -p vim --check does not cover those app files, and all four Formatting + Clippy CI jobs are failing for this reason. Please run the repository formatter and commit the result.
• [BLOCKING / ENVIRONMENTAL] Required user-facing visual proof is missing. The PR states that screenshots/video could not be captured in the sandbox. This is not treated as a code defect, but the code-editor behavior still needs computer-use evidence covering normal >>/<<, motion/count and visual selection behavior, plus confirmation that terminal command-input is unchanged.
• [BLOCKING / ENVIRONMENTAL] The full code-editor test target and ./script/presubmit remain outstanding because the sandbox ran out of memory/disk. The focused vim parser tests are reported as passing, but the affected app tests and repository gate must pass on a higher-capacity runner before acceptance.

Verdict

Request changes (REJECT). Fix the dot-repeat behavior and formatting, then attach the outstanding higher-capacity test/presubmit results and visual proof. GitHub records this as a comment because the authenticated review identity is the PR author; the factory gate remains blocked.

Review run

https://oz.staging.warp.dev/runs/019f95d2-19e5-7ccb-9967-ab9b6a321f5b

[warp-dev-github-integration]

Overview

Cumulative re-review (cycle 2) of Vim </> indent/dedent operators for the code editor (head d8b6913). All four cycle-1 findings are resolved and verified: the per-VimModel indent_operators_enabled flag (default false) gates </> so only CodeEditorView enables them and the terminal EditorView treats them as true no-ops (no operator-pending, no consumed keystroke); for_dot_repeat now persists Indent/Dedent so . repeats them; the ambiguous unindent-based multi-line test expectations were rewritten; and cargo fmt --all -- --check, cargo clippy -p vim --all-targets --tests -- -D warnings, and cargo nextest run -p vim (72 passed) are green in-sandbox. The indent(shift, …) mapping is correct (>→indent(false), <→indent(true), matching Tab/Shift-Tab in actions.rs), and no un-gated From<char> path can construct Indent/Dedent — </> only reach the operator mappings through the two gated arms, falling through to the catch-all no-op when disabled. All five acceptance criteria are met by the implementation and its tests.

Concerns

No code-level concerns remain. The only outstanding items are environmental, not code defects: this 3.9 GB / no-swap sandbox is OOM-killed compiling the full warp app crate, so the app-level code-editor unit tests (app/src/code/editor/view/vim_handler_tests.rs), ./script/presubmit, cargo clippy -p warp --all-targets, and the required visual proof for this user-facing change could not be captured here. This is an infrastructure gap that needs a higher-memory machine — another automated rework cycle would hit the same OOM and make no progress. Before merging, on a higher-memory machine run: cargo nextest run -p warp test_vim_, cargo clippy -p warp --all-targets --tests -- -D warnings, ./script/presubmit, and manually exercise >>, <<, >j, 2>>, >G, V>, V<, and . in the code editor with Vim mode on, confirming the terminal command input is unaffected by </>. Also confirm CI completes green on the current head — several checks (Linux/Windows/MacOS test runs, Linux/Windows Formatting+Clippy) were still pending at review time; the release-compilation (Linux/Windows/wasm), MacOS/wasm Formatting+Clippy, CodeQL, and Miscellaneous checks already passed.

Verdict

Found: 0 critical, 0 important, 0 suggestions. Prior concerns: none remain.

Approve — the code is sound and every cycle-1 finding is resolved. This approval is for code quality; the app-level tests and visual proof remain unverified pending a higher-memory machine (an environmental gap, not a code fault), and should be confirmed before merge as listed above.

Review run

https://oz.staging.warp.dev/runs/019f960c-a6c6-719d-b321-5c54e4c81ac0

[acarl005]

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