Add last modified file (gm) (#1093)

2 files changed, 19 insertions, 3 deletions

diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index 4a389429..a50b16f3 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -264,9 +264,10 @@ impl Command {
         goto_file_vsplit, "Goto files in the selection in vertical splits",
         goto_reference, "Goto references",
         goto_window_top, "Goto window top",
-        goto_window_middle, "Goto window middle",
+        goto_window_center, "Goto window center",
         goto_window_bottom, "Goto window bottom",
         goto_last_accessed_file, "Goto last accessed file",
+        goto_last_modified_file, "Goto last modified file",
         goto_last_modification, "Goto last modification",
         goto_line, "Goto line",
         goto_last_line, "Goto last line",
@@ -763,7 +764,7 @@ fn goto_window_top(cx: &mut Context) {
     goto_window(cx, Align::Top)
 }
 
-fn goto_window_middle(cx: &mut Context) {
+fn goto_window_center(cx: &mut Context) {
     goto_window(cx, Align::Center)
 }
 
@@ -3610,6 +3611,20 @@ fn goto_last_modification(cx: &mut Context) {
     }
 }
 
+fn goto_last_modified_file(cx: &mut Context) {
+    let view = view!(cx.editor);
+    let alternate_file = view
+        .last_modified_docs
+        .into_iter()
+        .flatten()
+        .find(|&id| id != view.doc);
+    if let Some(alt) = alternate_file {
+        cx.editor.switch(alt, Action::Replace);
+    } else {
+        cx.editor.set_error("no last modified buffer".to_owned())
+    }
+}
+
 fn select_mode(cx: &mut Context) {
     let (view, doc) = current!(cx.editor);
     let text = doc.text().slice(..);
diff --git a/helix-term/src/keymap.rs b/helix-term/src/keymap.rs
index 06639dcd..73cb15f8 100644
--- a/helix-term/src/keymap.rs
+++ b/helix-term/src/keymap.rs
@@ -521,9 +521,10 @@ impl Default for Keymaps {
                 "r" => goto_reference,
                 "i" => goto_implementation,
                 "t" => goto_window_top,
-                "m" => goto_window_middle,
+                "c" => goto_window_center,
                 "b" => goto_window_bottom,
                 "a" => goto_last_accessed_file,
+                "m" => goto_last_modified_file,
                 "n" => goto_next_buffer,
                 "p" => goto_previous_buffer,
                 "." => goto_last_modification,