show file statuses in commit files view

pkg/commands/commit_file.go

@@ -5,8 +5,11 @@ type CommitFile struct {
 	// Parent is the identifier of the parent object e.g. a commit SHA if this commit file is for a commit, or a stash entry ref like 'stash@{1}'
 	Parent string
 	Name   string
-	DisplayString string
+
+	// Status tells us whether the file has been wholly or partially added to a patch. We might want to pull this logic up into the gui package and make it a map like we do with cherry picked commits
 	Status int // one of 'WHOLE' 'PART' 'NONE'
+
+	ChangeStatus string // e.g. 'A' for added or 'M' for modified. This is based on the result from git diff --name-status
 }
 
 func (f *CommitFile) ID() string {

pkg/commands/git.go

@@ -1052,7 +1052,7 @@ func (c *GitCommand) GetFilesInDiff(from string, to string, reverse bool, patchM
 		reverseFlag = " -R "
 	}
 
-	filenames, err := c.OSCommand.RunCommandWithOutput("git diff --name-only %s %s %s", reverseFlag, from, to)
+	filenames, err := c.OSCommand.RunCommandWithOutput("git diff --name-status %s %s %s", reverseFlag, from, to)
 	if err != nil {
 		return nil, err
 	}
@@ -1064,16 +1064,19 @@ func (c *GitCommand) GetFilesInDiff(from string, to string, reverse bool, patchM
 func (c *GitCommand) GetCommitFilesFromFilenames(filenames string, parent string, patchManager *patch.PatchManager) []*CommitFile {
 	commitFiles := make([]*CommitFile, 0)
 
-	for _, file := range strings.Split(strings.TrimRight(filenames, "\n"), "\n") {
+	for _, line := range strings.Split(strings.TrimRight(filenames, "\n"), "\n") {
+		// typical result looks like 'A my_file' meaning my_file was added
+		changeStatus := line[0:1]
+		name := line[2:]
 		status := patch.UNSELECTED
 		if patchManager != nil && patchManager.To == parent {
-			status = patchManager.GetFileStatus(file)
+			status = patchManager.GetFileStatus(name)
 		}
 
 		commitFiles = append(commitFiles, &CommitFile{
 			Parent:       parent,
-			Name:          file,
-			DisplayString: file,
+			Name:         name,
+			ChangeStatus: changeStatus,
 			Status:       status,
 		})
 	}

pkg/gui/presentation/commit_files.go

@@ -5,6 +5,7 @@ import (
 	"github.com/jesseduffield/lazygit/pkg/commands"
 	"github.com/jesseduffield/lazygit/pkg/commands/patch"
 	"github.com/jesseduffield/lazygit/pkg/theme"
+	"github.com/jesseduffield/lazygit/pkg/utils"
 )
 
 func GetCommitFileListDisplayStrings(commitFiles []*commands.CommitFile, diffName string) [][]string {
@@ -37,5 +38,22 @@ func getCommitFileDisplayStrings(f *commands.CommitFile, diffed bool) []string {
 	if diffed {
 		colour = diffTerminalColor
 	}
-	return []string{colour.Sprint(f.DisplayString)}
+	return []string{utils.ColoredString(f.ChangeStatus, getColorForChangeStatus(f.ChangeStatus)), colour.Sprint(f.Name)}
+}
+
+func getColorForChangeStatus(changeStatus string) color.Attribute {
+	switch changeStatus {
+	case "A":
+		return color.FgGreen
+	case "M", "R":
+		return color.FgYellow
+	case "D":
+		return color.FgRed
+	case "C":
+		return color.FgCyan
+	case "T":
+		return color.FgMagenta
+	default:
+		return color.FgWhite
+	}
 }