fix: separate "(binary file)" suffix from filename in hyperlinks

[abobov]

Issue

I noticed a small issue with hyperlinks when viewing diffs of binary files. When --hyperlinks is enabled, binary files show a suffix (binary file) in their filename. However, this suffix was being included as part of the filename in the hyperlink, making the links point to non-existent paths.

For example, a binary file named logo.png would generate a hyperlink to logo.png (binary file) instead of just logo.png. This makes the link unusable since that exact path doesn't exist in the repository.

Solution

I've fixed this by:

• Adding a dedicated binary_files flag to track binary status separately
• Building the file description with clean hyperlinks first
• Appending the (binary file) indicator after the hyperlink is created

This ensures hyperlinks point to the actual file paths while still clearly indicating they're binary files.

This is my first contribution to a Rust project, and I'm excited to help improve delta! I'd appreciate any feedback on the implementation. Thanks for creating such an incredible tool that makes my daily development work so much better! 🚀

[abobov]

I wanted to share a quick demo to better illustrate the issue I described in the PR description.

Sample diff:

diff --git c/logo.png i/logo.png
new file mode 100644
index 0000000..f69082d
Binary files /dev/null and i/logo.png differ

demo.webm