[levochkaa]

Problem

JetBrains IDEs read --column as zero-based, while T3 Code file targets use one-based columns. A link to main.ts:12:4 launched idea --line 12 --column 4 main.ts, which puts the caret at line 12, column 5.

The IntelliJ Platform converts only the line: navigateToFileFromCommandLine builds OpenFileDescriptor(project, file, line - 1, column.coerceAtLeast(0)), and OpenFileDescriptor counts both from 0. JetBrains' own test line and column reach the opened editor passes --line 2 --column 3 and expects LogicalPosition(1, 3). The status bar shows that position one-based, as 2:4.

Change

The line-column launch style now passes the column minus one (never below 0). Lines and targets without a column are unchanged.

Scope

This is a very small, focused fix for an obvious bug: every JetBrains IDE in Open in lands one column off. It changes one argument in resolveCommandEditorArgs and the test expectations that pinned the old value. It does not touch which project the file opens in; that is #5885.

I first found and fixed this in #22289, then split it out so it can land on its own.

Verification

• vp test run src/process/externalLauncher.test.ts in apps/server: 18 passed and 2 failed. The failures, keeps the macOS VS Code Insiders bundle out of stable VS Code and does not report the agy CLI as the Antigravity IDE on darwin, read this Mac's real /Applications and fail the same way on main. The JetBrains cases on macOS, Windows, and Linux now expect --column 3 for file.ts:12:4.

• Lint and format on the changed files: clean.

• Manual check in Android Studio 2026.1 on macOS, with a project open and abcdefghijklmnopqrstuvwxyz on line 12. I ran the bundled CLI that Open in spawns, Contents/MacOS/studio --line 12 --column N src/main.ts, three times in a row with no keyboard input, and read the status bar after each run:

  --column	Status bar
  0	12:1
  3	12:4
  4 (what main passes for main.ts:12:4)	12:5

• Not checked: other JetBrains IDEs. They share the IntelliJ Platform command-line handling linked above.

Generated with Claude Opus 5.5.

[macroscopeapp]

Approvability

Verdict: Approved at 04ba05e

Macroscope's review found this PR approvable — This is a narrowly scoped server bug fix that adjusts JetBrains IDE column arguments from one-based to zero-based while preserving all other launch behavior. Cross-platform launcher expectations were updated, with no product-default or static-analysis configuration changes.

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[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Path: .coderabbit.config.ts
• Review profile: CHILL
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• Run ID: 2d11d151-a4e0-4a26-b4a9-80184e577105

📥 Commits

Reviewing files that changed from the base of the PR and between 1688f96 and ce92777.

📒 Files selected for processing: 2

• apps/server/src/process/externalLauncher.test.ts
• apps/server/src/process/externalLauncher.ts

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📝 Walkthrough

JetBrains editor launches now convert supplied columns from 1-based to 0-based values and clamp the result at zero. Updated platform-specific tests expect column 3.

Changes: JetBrains editor column indexing

Layer / File(s)	Summary
Convert JetBrains target columns apps/server/src/process/externalLauncher.ts, apps/server/src/process/externalLauncher.test.ts	JetBrains launch arguments now subtract one from the supplied column and clamp the result at zero. Tests update WebStorm and IntelliJ IDEA expectations to column 3 across macOS, Windows, and Linux cases.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Bug fix

Suggested reviewers: bil0000

Merge Risk: ⚪ Minimal · up to ce927

The JetBrains editor-link fix is ready to merge; no actionable risk remains.

Pre-merge checks: 4

Check name	Status	Explanation
Title check		The title clearly identifies the server fix for JetBrains IDEs opening file links at the wrong column.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description check		The description covers the problem, change, scope justification, verification results, known test limitations, and manual validation. The focused-fix exemption explains why prior approval was not requ…

Full details: Description check

Explanation

The description covers the problem, change, scope justification, verification results, known test limitations, and manual validation. The focused-fix exemption explains why prior approval was not required. The agent attribution names Claude Opus 5.5 but does not identify a harness; this is a minor omission and does not prevent review.

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