Add `unidecode` function

Example:

    $ unidecode "\x{1D306}"
    𝌆

1 files changed, 6 insertions, 0 deletions

diff --git a/.functions b/.functions
index 0cdfebc..871275d 100644
--- a/.functions
+++ b/.functions
@@ -23,4 +23,10 @@ function digga() {
 function escape() {
   printf "\\\x%s" $(printf "$@" | xxd -p -c1 -u)
   echo # newline
+}
+
+# Decode \x{ABCD}-style Unicode escape sequences
+function unidecode() {
+  perl -e "binmode(STDOUT, ':utf8'); print \"$@\""
+  echo # newline
 }
\ No newline at end of file