feat: Enhanced Git Diff Functionality

⚡ Updated the getGitDiff() function in util.go to run 'git diff --staged' if no diff is detected from the 'git diff' command, thus taking into account both unstaged and staged changes. The code changes trim excessive white spaces from the output. These changes now allow better diff prints by including staged diffs in the output.

Author: megamanics

util.go

@@ -20,10 +20,15 @@ const MaxDiffLength = 30000 // set to 30k since large model has maximum context
 func getGitDiff() (string, error) {
 	cmd := exec.Command("git", "diff")
 	output, err := cmd.Output()
-	if err != nil {
-		return "", fmt.Errorf("error running git diff: %v", err)
-	}
-	diff := string(output)
+	diff := strings.TrimSpace(string(output))
+	if diff == "" {
+        cmd = exec.Command("git", "diff", "--staged")
+        output, err = cmd.Output()
+        if err != nil {
+            return "", err
+        }
+        diff = strings.TrimSpace(string(output))
+    }
     runes := []rune(diff)
 	size := len(runes)
     if size > MaxDiffLength {