diff --git a/Cargo.lock b/Cargo.lock
index d350e49..56e1aa5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,6 +17,17 @@ version = "1.0.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ee10e43ae4a853c0a3591d4e2ada1719e553be18199d9da9d4a83f5927c2f5c7"
 
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -55,6 +66,8 @@ dependencies = [
  "anyhow",
  "clipboard",
  "dirs",
+ "log",
+ "pretty_env_logger",
  "regex",
  "serde",
  "serde_derive",
@@ -90,6 +103,19 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "env_logger"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44533bbbb3bb3c1fa17d9f2e4e38bbbaf8396ba82193c4cb1b6445d711445d36"
+dependencies = [
+ "atty",
+ "humantime",
+ "log",
+ "regex",
+ "termcolor",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.2.3"
@@ -101,6 +127,24 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "hermit-abi"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "humantime"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df004cfca50ef23c36850aaaa59ad52cc70d0e90243c3c7737a4dd32dc7a3c4f"
+dependencies = [
+ "quick-error",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.107"
@@ -160,6 +204,16 @@ dependencies = [
  "objc",
 ]
 
+[[package]]
+name = "pretty_env_logger"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "926d36b9553851b8b0005f1275891b392ee4d2d833852c417ed025477350fb9d"
+dependencies = [
+ "env_logger",
+ "log",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.32"
@@ -169,6 +223,12 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "quick-error"
+version = "1.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
+
 [[package]]
 name = "quote"
 version = "1.0.10"
@@ -242,6 +302,15 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "toml"
 version = "0.5.8"
@@ -279,6 +348,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
diff --git a/Cargo.toml b/Cargo.toml
index ceb83e0..94bc2d5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,6 +17,8 @@ readme = "README.md"
 anyhow = "1.0.45"
 clipboard = "0.5.0"
 dirs = "4.0.0"
+log = "0.4.14"
+pretty_env_logger = "0.4.0"
 regex = "1.5.4"
 serde = "1.0.130"
 serde_derive = "1.0.130"
diff --git a/src/main.rs b/src/main.rs
index f45f71f..ae80271 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,12 +1,16 @@
 mod config;
 
+use std::ops::Not;
+
 use anyhow::{anyhow, Result};
 use clipboard::{ClipboardContext, ClipboardProvider};
 use dirs::config_dir;
+use log::debug;
 
 use crate::config::{Act, Match, Replacements};
 
 fn main() -> Result<()> {
+    pretty_env_logger::init();
     let mut config_path = config_dir().ok_or(anyhow!("Failed to get config dir"))?;
     config_path.push("substitutor");
     config_path.push("config");
@@ -26,8 +30,18 @@ fn main() -> Result<()> {
             .iter()
             .find(|subst| subst.matcher.clone().check_match(&contents))
         {
+            if subst.name.is_empty().not() {
+                debug!("{}: matched on {}...", &subst.name, truncate(&contents, 40));
+            }
             let result = subst.action.clone().apply_action(contents);
             let _ = clipboard.set_contents(result);
         };
     }
 }
+
+fn truncate(s: &str, max_chars: usize) -> &str {
+    match s.char_indices().nth(max_chars) {
+        None => s,
+        Some((idx, _)) => &s[..idx],
+    }
+}