diff --git a/Cargo.toml b/Cargo.toml
index 362f975..5d0e85e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,6 +25,7 @@ rusqlite = { version = "0.28", features = ["bundled"] }
 futures-util = "0.3"
 irc = { version = "0.15", default-features = false, features = ["tls-rust"] }
 async-trait = "0.1"
+regex = "1.6.0"
 
 [features]
 # debug IRC commands
diff --git a/src/commands/sed.rs b/src/commands/sed.rs
index ab124f8..943d6cc 100644
--- a/src/commands/sed.rs
+++ b/src/commands/sed.rs
@@ -1,6 +1,8 @@
 use crate::bot::{Context, Trigger};
 use async_trait::async_trait;
+use fancy_regex::escape;
 use fancy_regex::Captures;
+use regex::RegexBuilder;
 
 pub struct Sed;
 
@@ -25,9 +27,22 @@ impl Trigger for Sed {
             return Ok("No previous messages found.".into());
         };
         if let (Some(find), Some(replace)) = (captures.name("r"), captures.name("w")) {
-            // TODO: karx plz add flags
-            //let flags = matches.name("f").map(|m| m.as_str());
-            let result = message.replace(find.as_str(), replace.as_str());
+            let (global, ignore_case) = captures
+                .name("f")
+                .map(|m| m.as_str())
+                .map(|s| (s.contains('g'), s.contains('i')))
+                .unwrap_or_default();
+
+            let escaped = escape(find.as_str());
+            let re = RegexBuilder::new(&escaped)
+                .case_insensitive(ignore_case)
+                .build()
+                .unwrap(); // Of course it's valid, we just escaped special chars
+            let result = if global {
+                re.replace_all(&message, replace.as_str())
+            } else {
+                re.replace(&message, replace.as_str())
+            };
             if foreign_author {
                 Ok(format!(
                     "(edited by {}) <{}> {}",