fn ask_about_patch()

in src/main.rs [401:455]

• 53 lines of code
• 5 McCabe index (conditional complexity)

    fn ask_about_patch<'a>(
        &mut self,
        path: &Path,
        old: &'a str,
        start_line: usize,
        end_line: usize,
        new: &'a str,
    ) -> Result<bool> {
        terminal::clear();

        let diffs = self.diffs_to_print(old, new);
        if diffs.is_empty() {
            return Ok(false);
        }

        if start_line == end_line {
            println!("{}:{}", path.to_string_lossy(), start_line);
        } else {
            println!("{}:{}-{}", path.to_string_lossy(), start_line, end_line);
        }
        self.print_diff(&diffs);
        let mut user_input = if self.yes_to_all {
            'y'
        } else {
            prompt(
                "Accept change (y = yes [default], \
                 n = no, e = edit, A = yes to all, E = yes+edit, q = quit)?\n",
                "yneAEq",
                Some('y'),
            )?
        };
        if user_input == 'A' {
            self.yes_to_all = true;
            user_input = 'y';
        }
        match user_input {
            'y' => {
                self.save(path, new)?;
                Ok(true)
            }
            'E' => {
                self.save(path, new)?;
                run_editor(path, start_line)?;
                Ok(true)
            }
            'e' => {
                self.record_change(path.to_owned());
                run_editor(path, start_line)?;
                Ok(true)
            }
            'q' => exit(0),
            'n' => Ok(false),
            _ => unreachable!(),
        }
    }