diff --git a/complete/src/fish.rs b/complete/src/fish.rs
index d6f0f66..e2a49f2 100644
--- a/complete/src/fish.rs
+++ b/complete/src/fish.rs
@@ -108,6 +108,7 @@ mod test {
                         value: Value::No,
                     }],
                     long: vec![],
+                    dd_style: vec![],
                     help: "some flag",
                     value: Some(hint),
                 }],
diff --git a/complete/src/lib.rs b/complete/src/lib.rs
index 5d8649c..ab2a4eb 100644
--- a/complete/src/lib.rs
+++ b/complete/src/lib.rs
@@ -41,6 +41,7 @@ pub struct Command<'a> {
 pub struct Arg<'a> {
     pub short: Vec<Flag<'a>>,
     pub long: Vec<Flag<'a>>,
+    pub dd_style: Vec<(&'a str, &'a str)>,
     pub help: &'a str,
     pub value: Option<ValueHint>,
 }
diff --git a/complete/src/man.rs b/complete/src/man.rs
index 046cf08..d381c59 100644
--- a/complete/src/man.rs
+++ b/complete/src/man.rs
@@ -54,6 +54,14 @@ pub fn render(c: &Command) -> String {
                 Value::No => {}
             }
         }
+        for (flag, value) in &arg.dd_style {
+            if !flags.is_empty() {
+                flags.push(roman(", "));
+            }
+            flags.push(bold(*flag));
+            flags.push(roman("="));
+            flags.push(italic(*value));
+        }
         page.text(flags);
         page.text([roman(arg.help)]);
     }
diff --git a/complete/src/md.rs b/complete/src/md.rs
index 1c2fa1b..fcc80a3 100644
--- a/complete/src/md.rs
+++ b/complete/src/md.rs
@@ -58,6 +58,10 @@ fn options(c: &Command) -> String {
             flags.push(format!("<code>-{flag}{value_str}</code>"));
         }
 
+        for (flag, value) in &arg.dd_style {
+            flags.push(format!("<code>{flag}={value}</code>"));
+        }
+
         out.push_str(&flags.join(", "));
         out.push_str("</dt>\n");
         out.push_str(&format!("<dd>\n\n{}\n\n</dd>\n", arg.help));
diff --git a/derive/src/complete.rs b/derive/src/complete.rs
index 10b9691..6d00b9e 100644
--- a/derive/src/complete.rs
+++ b/derive/src/complete.rs
@@ -33,16 +33,21 @@ pub fn complete(args: &[Argument], file: &Option<String>) -> TokenStream {
             continue;
         };
 
-        let Flags { short, long, .. } = flags;
-        if short.is_empty() && long.is_empty() {
+        let Flags {
+            short,
+            long,
+            dd_style,
+        } = flags;
+        if short.is_empty() && long.is_empty() && dd_style.is_empty() {
             continue;
         }
 
         // If none of the flags take an argument, we won't need ValueHint
         // based on that type. So we should not attempt to call `value_hint`
         // on it.
-        let any_flag_takes_argument =
-            short.iter().any(|f| f.value != Value::No) && long.iter().any(|f| f.value != Value::No);
+        let any_flag_takes_argument = !dd_style.is_empty()
+            && short.iter().any(|f| f.value != Value::No)
+            && long.iter().any(|f| f.value != Value::No);
 
         let short: Vec<_> = short
             .iter()
@@ -75,6 +80,11 @@ pub fn complete(args: &[Argument], file: &Option<String>) -> TokenStream {
             })
             .collect();
 
+        let dd_style: Vec<_> = dd_style
+            .iter()
+            .map(|(flag, value)| quote!((#flag, #value)))
+            .collect();
+
         let hint = match (field, any_flag_takes_argument) {
             (Some(ty), true) => quote!(Some(<#ty>::value_hint())),
             _ => quote!(None),
@@ -84,6 +94,7 @@ pub fn complete(args: &[Argument], file: &Option<String>) -> TokenStream {
             ::uutils_args_complete::Arg {
                 short: vec![#(#short),*],
                 long: vec![#(#long),*],
+                dd_style: vec![#(#dd_style),*],
                 help: #help,
                 value: #hint,
             }
diff --git a/examples/completion.rs b/examples/completion.rs
index 112cc60..bf8f2e0 100644
--- a/examples/completion.rs
+++ b/examples/completion.rs
@@ -2,7 +2,7 @@ use std::path::PathBuf;
 
 use uutils_args::{Arguments, Options, Value};
 
-#[derive(Value)]
+#[derive(Value, Debug)]
 enum Number {
     #[value]
     One,
@@ -27,13 +27,22 @@ enum Arg {
     /// Give it a path!
     #[arg("-p P", "--path=P")]
     Path(PathBuf),
+
+    /// A dd_style argument!
+    #[arg("if=file")]
+    File(PathBuf),
 }
 
 struct Settings;
 
 impl Options<Arg> for Settings {
-    fn apply(&mut self, _arg: Arg) {
-        panic!("Compile with the 'parse-is-complete' feature!")
+    fn apply(&mut self, arg: Arg) {
+        match arg {
+            Arg::Flag => println!("Got flag"),
+            Arg::Number(n) => println!("Got number {n:?}"),
+            Arg::Path(p) => println!("Got path {}", p.display()),
+            Arg::File(f) => println!("Got file {}", f.display()),
+        }
     }
 }
 
diff --git a/tests/coreutils/dd.rs b/tests/coreutils/dd.rs
index fe5ef69..7538cfe 100644
--- a/tests/coreutils/dd.rs
+++ b/tests/coreutils/dd.rs
@@ -62,13 +62,14 @@ struct Settings {
     outfile: Option<PathBuf>,
     ibs: usize,
     obs: usize,
+    cbs: usize,
     skip: u64,
     seek: u64,
     count: usize,
-    _iconv: Vec<String>,
-    _iflags: Vec<String>,
-    _oconv: Vec<String>,
-    _oflags: Vec<String>,
+    iconv: Vec<String>,
+    iflags: Vec<String>,
+    oconv: Vec<String>,
+    oflags: Vec<String>,
     status: Option<StatusLevel>,
 }
 
@@ -77,15 +78,16 @@ impl Default for Settings {
         Self {
             ibs: 512,
             obs: 512,
+            cbs: 512,
             infile: Default::default(),
             outfile: Default::default(),
             skip: Default::default(),
             seek: Default::default(),
             count: Default::default(),
-            _iconv: Default::default(),
-            _iflags: Default::default(),
-            _oconv: Default::default(),
-            _oflags: Default::default(),
+            iconv: Default::default(),
+            iflags: Default::default(),
+            oconv: Default::default(),
+            oflags: Default::default(),
             status: Default::default(),
         }
     }
@@ -102,14 +104,21 @@ impl Options<Arg> for Settings {
                 self.ibs = b;
                 self.obs = b;
             }
-            Arg::Cbs(_) => todo!(),
+            Arg::Cbs(b) => self.cbs = b,
             Arg::Skip(b) => self.skip = b,
             Arg::Seek(b) => self.seek = b,
             Arg::Count(n) => self.count = n,
             Arg::Status(level) => self.status = Some(level),
-            Arg::Conv(_) => todo!(),
-            Arg::Iflag(_) => todo!(),
-            Arg::Oflag(_) => todo!(),
+            Arg::Conv(c) => {
+                self.iconv.push(c.clone());
+                self.oconv.push(c);
+            }
+            Arg::Iflag(f) => {
+                self.iflags.push(f);
+            }
+            Arg::Oflag(f) => {
+                self.oflags.push(f);
+            }
         }
     }
 }