wip patch mode

src/display/mod.rs

@@ -2,5 +2,6 @@ pub(crate) mod context;
 pub(crate) mod hunks;
 pub(crate) mod inline;
 pub(crate) mod json;
+pub(crate) mod patch;
 pub(crate) mod side_by_side;
 pub(crate) mod style;

src/line_parser.rs

@@ -10,7 +10,7 @@ use crate::{
     parse::syntax::{AtomKind, MatchKind, MatchedPos, TokenKind},
 };
 
-fn split_lines_keep_newline(s: &str) -> Vec<&str> {
+pub(crate) fn split_lines_keep_newline(s: &str) -> Vec<&str> {
     lazy_static! {
         static ref NEWLINE_RE: Regex = Regex::new("\n").unwrap();
     }

src/main.rs

@@ -314,6 +314,7 @@ fn main() {
                             print_diff_result(&display_options, &diff_result);
                         }
                         DisplayMode::Json => display::json::print(&diff_result),
+                        DisplayMode::Patch => display::patch::print(&diff_result),
                     }
                 }
             }
@@ -881,6 +882,7 @@ fn print_diff_result(display_options: &DisplayOptions, summary: &DiffResult) {
                     );
                 }
                 DisplayMode::Json => unreachable!(),
+                DisplayMode::Patch => todo!(),
             }
         }
         (FileContent::Binary, FileContent::Binary) => {

src/options.rs

@@ -158,7 +158,7 @@ fn app() -> clap::Command<'static> {
         )
         .arg(
             Arg::new("display").long("display")
-                .possible_values(["side-by-side", "side-by-side-show-both", "inline", "json"])
+                .possible_values(["side-by-side", "side-by-side-show-both", "inline", "json", "patch"])
                 .default_value("side-by-side")
                 .value_name("MODE")
                 .env("DFT_DISPLAY")
@@ -300,6 +300,7 @@ When multiple overrides are specified, the first matching override wins."))
 #[derive(Debug, Copy, Clone)]
 pub(crate) enum DisplayMode {
     Inline,
+    Patch,
     SideBySide,
     SideBySideShowBoth,
     Json,
@@ -570,6 +571,7 @@ pub(crate) fn parse_args() -> Mode {
 
             DisplayMode::Json
         }
+        "patch" => DisplayMode::Patch,
         _ => {
             unreachable!("clap has already validated display")
         }