[Copilot]

Invoke-Formatter -Range could silently drop later corrections when earlier edits moved them beyond the original range end. Shortening a selected line could also leave invalid range coordinates.

• Range tracking: Update the range end after each applied correction, accounting for both line and column changes across iterations and rules.
• Regression coverage: Cover expansion, contraction, multiline selections, and line insertion/removal while preserving adjacent unselected lines.

Invoke-Formatter -ScriptDefinition "if(`$a){'x'}`nif(`$b){'y'}" -Range @(2, 1, 2, 12)

Produces:

if($a){'x'}
if ($b) { 'y' }

• Fixes Invoke-Formatter -Range silently drops corrections after earlier fixes shift text #2211

[Copilot]

🟡 Changes recommended

Empty replacements can cause range-endpoint mapping to throw after deleting selected lines, so zero-line replacements need explicit handling, including when no selected lines remain.

1 open issue

• Handle empty replacements without throwing on range endpoint mapping · New

What changed in this PR

This PR addresses #2211 by tracking formatter selection boundaries as corrections change the text, so later fixes remain within the intended range.

Changes:

• Update the range endpoint after each correction, accounting for line and column changes.
• Add regression coverage for expanding and shortening selections, inserting and removing lines, and preserving adjacent unselected lines.

File	Description
Tests/​Engine/​InvokeFormatter.tests.ps1	Adds range-formatting regression cases.
Engine/​ScriptAnalyzer.cs	Replaces per-pass line-count adjustment with per-correction endpoint tracking.

_{Review effort: Balanced}

[Copilot]

🟡 Changes recommended

Zero-line replacements mishandle selection endpoints, potentially causing negative-column exceptions or allowing subsequent formatting to modify originally unselected text.

2 open issues

• Prevent formatting from expanding exhausted selections · New
• Map deletion endpoint to surviving selected line end · New

1 resolved since last review

• Handle empty replacements without throwing on range endpoint mapping

_{Review effort: Balanced}

[Copilot]

🟢 Approval recommended

No active review issues block the changes to keep formatter corrections within the intended selection.

No open issues 🎉

2 resolved since last review

• Map deletion endpoint to surviving selected line end
• Prevent formatting from expanding exhausted selections

_{Review effort: Balanced}