diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..bbd3613
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,31 @@
+Copyright (c) 2010 Roel van Dijk
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * The name of Roel van Dijk and the names of contributors may NOT
+      be used to endorse or promote products derived from this
+      software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/haskell-unicode-input-method.el b/haskell-unicode-input-method.el
new file mode 100644
index 0000000..0a49455
--- /dev/null
+++ b/haskell-unicode-input-method.el
@@ -0,0 +1,193 @@
+;; Haskell Unicode helper functions
+;; Copyright: 2010 Roel van Dijk <vandijk.roel@gmail.com>
+;; License: BSD3, see the accompanying file LICENSE.
+
+(require 'quail)
+
+(quail-define-package
+ "haskell-unicode" "UTF-8" "\\" t
+ "Haskell Unicode input method.
+Designed to be used with the Haskell UnicodeSyntax language
+extension in combination with the x-unicode-symbols set of
+packages (base-unicode-symbols and containers-unicode-symbols).
+" nil t nil nil nil nil nil nil nil nil t)
+
+(quail-define-rules
+ ;; Greek letters
+ ("alpha"            ?α)
+ ("Alpha"            ?Α)
+ ("beta"             ?β)
+ ("Beta"             ?Β)
+ ("gamma"            ?γ)
+ ("Gamma"            ?Γ)
+ ("delta"            ?δ)
+ ("Delta"            ?Δ)
+ ("epsilon"          ?ε)
+ ("Epsilon"          ?Ε)
+ ("zeta"             ?ζ)
+ ("Zeta"             ?Ζ)
+ ("eta"              ?η)
+ ("Eta"              ?Η)
+ ("theta"            ?θ)
+ ("Theta"            ?Θ)
+ ("iota"             ?ι)
+ ("Iota"             ?Ι)
+ ("kappa"            ?κ)
+ ("Kappa"            ?Κ)
+ ("lambda"           ?λ)
+ ("Lambda"           ?Λ)
+ ("lamda"            ?λ)
+ ("Lamda"            ?Λ)
+ ("mu"               ?μ)
+ ("Mu"               ?Μ)
+ ("nu"               ?ν)
+ ("Nu"               ?Ν)
+ ("xi"               ?ξ)
+ ("Xi"               ?Ξ)
+ ("omicron"          ?ο)
+ ("Omicron"          ?Ο)
+ ("pi"               ?π)
+ ("Pi"               ?Π)
+ ("rho"              ?ρ)
+ ("Rho"              ?Ρ)
+ ("sigma"            ?σ)
+ ("Sigma"            ?Σ)
+ ("tau"              ?τ)
+ ("Tau"              ?Τ)
+ ("upsilon"          ?υ)
+ ("Upsilon"          ?Υ)
+ ("phi"              ?φ)
+ ("Phi"              ?Φ)
+ ("chi"              ?χ)
+ ("Chi"              ?Χ)
+ ("psi"              ?ψ)
+ ("Psi"              ?Ψ)
+ ("omega"            ?ω)
+ ("Omega"            ?Ω)
+ ("digamma"          ?ϝ)
+ ("Digamma"          ?Ϝ)
+ ("san"              ?ϻ)
+ ("San"              ?Ϻ)
+ ("qoppa"            ?ϙ)
+ ("Qoppa"            ?Ϙ)
+ ("sampi"            ?ϡ)
+ ("Sampi"            ?Ϡ)
+ ("stigma"           ?ϛ)
+ ("Stigma"           ?Ϛ)
+ ("heta"             ?ͱ)
+ ("Heta"             ?Ͱ)
+ ("sho"              ?ϸ)
+ ("Sho"              ?Ϸ)
+
+ ;; Types
+ ("::"               ?∷)
+
+ ;; Quantifiers
+ ("forall"           ?∀)
+ ("exists"           ?∃)
+
+ ;; Arrows
+ ("->"               ?→)
+ ("-->"              ?⟶)
+ ("<-"               ?←)
+ ("<--"              ?⟵)
+ ("<->"              ?↔)
+ ("<-->"             ?⟷)
+
+ ("=>"               ?⇒)
+ ("==>"              ?⟹)
+ ("<="               ?⇐)
+ ("<=="              ?⟸)
+ ("<=>"              ?⇔)
+ ("<==>"             ?⟺)
+
+ ("|->"              ?↦)
+ ("|-->"             ?⟼)
+ ("<-|"              ?↤)
+ ("<--|"             ?⟻)
+
+ ("|=>"              ?⤇)
+ ("|==>"             ?⟾)
+ ("<=|"              ?⤆)
+ ("<==|"             ?⟽)
+
+ ("~>"               ?⇝)
+ ("~~>"              ?⟿)
+ ("<~"               ?⇜)
+ ("<~~"              ?⬳)
+
+ (">->"              ?↣)
+ ("<-<"              ?↢)
+ ("->>"              ?↠)
+ ("<<-"              ?↞)
+
+ (">->>"             ?⤖)
+ ("<<-<"             ?⬻)
+
+ ("<|-"              ?⇽)
+ ("-|>"              ?⇾)
+ ("<|-|>"            ?⇿)
+
+ ("<-/-"             ?↚)
+ ("-/->"             ?↛)
+
+ ("<-|-"             ?⇷)
+ ("-|->"             ?⇸)
+ ("<-|->"            ?⇹)
+
+ ("<-||-"            ?⇺)
+ ("-||->"            ?⇻)
+ ("<-||->"           ?⇼)
+
+ ("-o->"             ?⇴)
+ ("<-o-"             ?⬰)
+
+ ;; Boolean operators
+ ("not"              ?¬)
+ ("&&"               ?∧)
+ ("||"               ?∨)
+
+ ;; Relational operators
+ ("=="               ?≡)
+ ("/="               ?≢)
+ ("<="               ?≤)
+ (">="               ?≥)
+ ("/<"               ?≮)
+ ("/>"               ?≯)
+
+ ;; Arithmetic
+ ("/"                ?÷)
+ ("*"                ?⋅)
+
+ ;; Containers / Collections
+ ("++"               ?⧺)
+ ("+++"              ?⧻)
+ ("|||"              ?⫴)
+ ("empty"            ?∅)
+ ("elem"             ?∈)
+ ("notElem"          ?∉)
+ ("member"           ?∈)
+ ("notMember"        ?∉)
+ ("union"            ?∪)
+ ("intersection"     ?∩)
+ ("isSubsetOf"       ?⊆)
+ ("isProperSubsetOf" ?⊂)
+
+ ;; Other
+ ("<<"               ?≪)
+ (">>"               ?≫)
+ ("<<<"              ?⋘)
+ (">>>"              ?⋙)
+ ("<|"               ?⊲)
+ ("|>"               ?⊳)
+ ("><"               ?⋈)
+ ("mempty"           ?∅)
+ ("mappend"          ?⊕)
+ ("<*>"              ?⊛)
+ ("."                ?∘)
+ ("undefined"        ?⊥)
+ (":="               ?≔)
+ ("=:"               ?≕)
+ ("=def"             ?≝)
+ ("=?"               ?≟)
+)