Ankur worked on improving the Elvish shell integration for the Ghostty repository, focusing on enhancing stability and compatibility for Elvish users. He addressed a cross-shell fragility by replacing the Bash builtin 'type' with the Elvish-native 'has-external' function, reducing runtime errors and preventing edge-case failures in integration scenarios. This targeted bug fix, implemented using Elvish and shell scripting, increased reliability for workflows dependent on Elvish. Ankur’s work demonstrated careful attention to cross-shell scripting nuances and provided clear commit traceability, resulting in lower support overhead and improved maintainability for future extensions of Elvish compatibility within the Ghostty project.