feat(record): add --allow-empty

Primarily for creating new, empty commits with automatic rebasing, for when you know you want to add something into a stack but you're not yet sure what.

Author: claytonrcarter

git-branchless-opts/src/lib.rs

@@ -334,6 +334,10 @@ pub struct RecordArgs {
     /// How should newly encountered, untracked files be handled?
     #[clap(value_parser, long = "untracked", conflicts_with_all(&["interactive"]))]
     pub untracked_file_strategy: Option<UntrackedFileStrategy>,
+
+    /// Allow creating an empty commit.
+    #[clap(action, long = "allow-empty")]
+    pub allow_empty: bool,
 }
 
 /// Display a nice graph of the commits you've recently worked on.

git-branchless-record/src/lib.rs

@@ -60,6 +60,7 @@ pub fn command_main(ctx: CommandContext, args: RecordArgs) -> EyreExitOr<()> {
         insert,
         stash,
         untracked_file_strategy,
+        allow_empty,
     } = args;
     record(
         &effects,
@@ -71,6 +72,7 @@ pub fn command_main(ctx: CommandContext, args: RecordArgs) -> EyreExitOr<()> {
         insert,
         stash,
         untracked_file_strategy,
+        allow_empty,
     )
 }
 
@@ -85,6 +87,7 @@ fn record(
     insert: bool,
     stash: bool,
     untracked_file_strategy: Option<UntrackedFileStrategy>,
+    allow_empty: bool,
 ) -> EyreExitOr<()> {
     let now = SystemTime::now();
     let repo = Repo::from_dir(&git_run_info.working_directory)?;
@@ -113,7 +116,7 @@ fn record(
                     )?)
                 };
 
-                if files_to_add.is_empty() {
+                if files_to_add.is_empty() && !allow_empty {
                     writeln!(
                         effects.get_output_stream(),
                         "There are no changes to tracked files in the working copy to commit."
@@ -222,6 +225,9 @@ fn record(
             if working_copy_changes_type == WorkingCopyChangesType::Unstaged {
                 args.push("--all");
             }
+            if allow_empty {
+                args.push("--allow-empty");
+            }
             args
         };
         try_exit_code!(git_run_info.run_direct_no_wrapping(Some(event_tx_id), &args)?);