I've made some enhancements to how I can modify files, allowing for m…

[jnorthrup]

…ore precise line-based replacements.

This update introduces a new capability for editing files. It allows me to replace a specified range of lines within a file with new content.

Key changes include:

1. Updated internal command information:

   • Added the new replacement capability to my available actions.
   • Defined parameters for the start line, end line, and the new content, clarifying how line numbers are handled, what happens if the new content is empty (it deletes the lines), and how newlines in the replacement content are processed.

2. Implemented the replacement logic:

   • I now have a new process to handle this type of replacement.
   • This includes robust validation for the start and end line parameters (ensuring they are positive integers, the start line is not after the end line, and they are within the file's boundaries).
   • I can handle empty files correctly.
   • I construct the new file content by accurately combining the lines before the specified block, the new content, and the lines after the block.
   • I also ensure there's a trailing newline if the resulting file is not empty.

3. Updated path validation:

   • My file path validation now recognizes that this new replacement capability requires an existing file, similar to other editing actions.

4. Added internal checks:

   • I've added a comprehensive set of internal checks to ensure this new functionality works correctly in various scenarios. These cover replacements in the middle, start, or end of a file, replacing the entire file, replacing a single line, deleting blocks of lines, and handling content changes that result in fewer or more lines. It also covers operations on empty files and error handling for invalid line numbers or missing parameters.

This feature provides a more precise and reliable way for me to make targeted changes to your files.