@@ -87,3 +87,10 @@ pub fn pre_commit_check(pre_commit_command: Option<String>, message: &str) -> Re
     }
     Ok(())
 }
+
+pub fn git_add_all_modified() -> Result<()> {
+    let output = git_exec(&["add", "-u"])?;
+    std::io::stdout().write_all(&output.stdout)?;
+    std::io::stderr().write_all(&output.stderr)?;
+    Ok(())
+}
@@ -17,12 +17,14 @@ use std::io::Write;
 use std::path::PathBuf;
 
 use commit::{
-    check_staged_files, commit, pre_commit_check, read_cached_commit, write_cached_commit,
+    check_staged_files, commit, git_add_all_modified, pre_commit_check, read_cached_commit,
+    write_cached_commit,
 };
 use commit_message::make_message_commit;
 
 const DEFAULT_CONFIG_FILE: &str = include_str!("../commit-default.json");
 
+#[allow(clippy::pedantic)]
 #[derive(Parser, Debug)]
 #[command(about, author, version)]
 struct Args {
@@ -38,11 +40,18 @@ struct Args {
     /// Retry commit with the same message as the last one
     #[arg(short, long)]
     retry: bool,
+    /// Add all modified files into staging
+    #[arg(short, long)]
+    all: bool,
 }
 
 fn main() -> Result<()> {
     let args = Args::parse();
 
+    if args.all {
+        git_add_all_modified()?;
+    }
+
     check_staged_files()?;
 
     if args.init {
Original file line number	Diff line number	Diff line change
`@@ -87,3 +87,10 @@ pub fn pre_commit_check(pre_commit_command: Option<String>, message: &str) -> Re`
`87`	`87`	`}`
`88`	`88`	`Ok(())`
`89`	`89`	`}`
	`90`	`+`
	`91`	`+pub fn git_add_all_modified() -> Result<()> {`
	`92`	`+ let output = git_exec(&["add", "-u"])?;`
	`93`	`+ std::io::stdout().write_all(&output.stdout)?;`
	`94`	`+ std::io::stderr().write_all(&output.stderr)?;`
	`95`	`+ Ok(())`
	`96`	`+}`