feat: open editor in current line

closes #547

ui/editor.go

@@ -7,11 +7,11 @@ import (
 
 type editorFinishedMsg struct{ err error }
 
-func openEditor(path string) tea.Cmd {
+func openEditor(path string, lineno int) tea.Cmd {
 	cb := func(err error) tea.Msg {
 		return editorFinishedMsg{err}
 	}
-	cmd, err := editor.Cmd("Glow", path)
+	cmd, err := editor.Cmd("Glow", path, editor.OpenAtLine(uint(lineno)))
 	if err != nil {
 		return func() tea.Msg { return cb(err) }
 	}

ui/pager.go

@@ -196,7 +196,14 @@ func (m pagerModel) update(msg tea.Msg) (pagerModel, tea.Cmd) {
 			}
 
 		case "e":
-			return m, openEditor(m.currentDocument.localPath)
+			l := int(math.Round(float64(m.viewport.TotalLineCount()) * m.viewport.ScrollPercent()))
+			if m.viewport.AtTop() {
+				l = 0
+			}
+			if m.viewport.AtBottom() {
+				l = m.viewport.TotalLineCount()
+			}
+			return m, openEditor(m.currentDocument.localPath, l)
 
 		case "c":
 			// Copy using OSC 52
@@ -222,9 +229,6 @@ func (m pagerModel) update(msg tea.Msg) (pagerModel, tea.Cmd) {
 			cmds = append(cmds, viewport.Sync(m.viewport))
 		}
 
-	case editMardownMsg:
-		return m, openEditor(msg.md.localPath)
-
 	// We've finished editing the document, potentially making changes. Let's
 	// retrieve the latest version of the document so that we display
 	// up-to-date contents.
@@ -445,5 +449,3 @@ func glamourRender(m pagerModel, markdown string) (string, error) {
 
 	return content.String(), nil
 }
-
-type editMardownMsg struct{ md *markdown }

ui/stash.go

@@ -519,7 +519,7 @@ func (m *stashModel) handleDocumentBrowsing(msg tea.Msg) tea.Cmd {
 		// Edit document in EDITOR
 		case "e":
 			md := m.selectedMarkdown()
-			return openEditor(md.localPath)
+			return openEditor(md.localPath, 0)
 
 		// Open document
 		case keyEnter: