rename git::add_file() to just add(), it can add directories too

src/comment.rs

@@ -95,7 +95,7 @@ impl Comment {
             return Err(CommentError::EditorError);
         }
         if description_filename.exists() && description_filename.metadata()?.len() > 0 {
-            crate::git::add_file(&description_filename)?;
+            crate::git::add(&description_filename)?;
         } else {
             // User saved an empty file, which means they changed their
             // mind and no longer want to edit the description.

src/git.rs

@@ -136,7 +136,7 @@ pub fn worktree_is_dirty(dir: &str) -> Result<bool, GitError> {
     return Ok(result.stdout.len() > 0);
 }
 
-pub fn add_file(file: &std::path::Path) -> Result<(), GitError> {
+pub fn add(file: &std::path::Path) -> Result<(), GitError> {
     let result = std::process::Command::new("git")
         .args(["add", &file.to_string_lossy()])
         .current_dir(file.parent().unwrap())

src/issue.rs

@@ -230,7 +230,7 @@ impl Issue {
             return Err(IssueError::EditorError);
         }
         if description_filename.exists() && description_filename.metadata()?.len() > 0 {
-            crate::git::add_file(&description_filename)?;
+            crate::git::add(&description_filename)?;
         } else {
             // User saved an empty file, which means they changed their
             // mind and no longer want to edit the description.