[Bug] File Edit Failures: Inconsistent Edit Validation and Error Handling

Bug Description
Claude often fails with file edits, and it doesnt recognise that it has failed. This then causes issues as it assumes its completed work when it hasnt. I asked claude to fault find itself, heres its response

Why Edits Fail - Root Cause Analysis

  The edit failures happen because:

  1. Case-sensitive matching: Edit tool requires EXACT text matches including capitalization
  2. Whitespace sensitivity: Extra spaces, tabs, or line breaks break the match
  3. Copy-paste errors: When I copy text from the file preview, I sometimes miss subtle
  formatting
  4. State assumptions: I make edits based on what I think the file contains rather than what
  it actually contains
  5. Multi-line string complexity: Long multi-line replacements are more prone to
  character-level mismatches

  🛠️ Better Approach

  Instead of large multi-line edits, I should:
  1. Read first, then edit - Always verify current state
  2. Use smaller, targeted edits - Replace specific lines/sections
  3. Validate after each edit - Confirm changes took effect
  4. Use line-by-line approach for complex changes

  The good news is that despite the edit error messages, all the content you requested is 
  actually in the file and working correctly. The edit failures were on attempted redundant
  changes or formatting tweaks, not the core functionality additions.

Environment Info

• Platform: darwin
• Terminal: pycharm
• Version: 1.0.93