[BUG] word diff is misleading

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Notice how the words west and east are highlighted, but this is not an accurate reflection of the proposed edit.

<img width="711" height="698" alt="Image" src="https://github.com/user-attachments/assets/69a1fb40-ca8f-4161-b465-e88a3a5e8949" />

What Should Happen?

\newcommand{\partdecorations}{%
[-\AddToShipoutPictureFG*{%-]
[- \AtTextLowerLeft{%-] \begin{tikzpicture}[remember picture, overlay]
% Top-left corner (character 77 = M)
% Top-right corner (character 79 = O)
% Bottom-right corner (character 82 = R)
% Bottom-left corner (character 80 = P)
\node[anchor=north west, inner sep=0pt]
at [-(0,\textheight)-]{+(current page.north west)+} {{\webomints\HUGE R}};
\node[anchor=north east, inner sep=0pt]
at [-(\textwidth,\textheight)-]{+(current page.north east)+} {{\webomints\HUGE P}};
\node[anchor=south east, inner sep=0pt]
at [-(\textwidth,0)-]{+(current page.south east)+} {{\webomints\HUGE M}};
\node[anchor=south west, inner sep=0pt]
at [-(0,0)-]{+(current page.south west)+} {{\webomints\HUGE O}};
\end{tikzpicture}%[-}%-]
[- }%-]
}

Error Messages/Logs

Steps to Reproduce

Prompt: Get rid of the \AddToShipoutPictureFG wrapper in \partdecorations

I attached the pre-change file.

wrap.txt

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.51

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

I'm using ghostty