diff --git a/devel/update-amm b/devel/update-amm
index 9c934a8..f38b1f7 100755
--- a/devel/update-amm
+++ b/devel/update-amm
@@ -1,14 +1,21 @@
 #!/bin/zsh
-versions=$(curl -L https://api.github.com/repos/lihaoyi/Ammonite/releases/latest)
+versions=$(curl -sL https://api.github.com/repos/lihaoyi/Ammonite/releases/latest)
 
 download-version() {
-	(
-	echo "#/usr/bin/env python --version sh" && \
-	curl -L $( echo -E $versions \
-			| jq -r ".assets | map(select(.name | startswith(\"$1\")))[0].browser_download_url")
-	) > $2
-	chmod +x $2
+	version=$(jq ".assets | map(select(.name | startswith(\"$1\")))[0]" <<<$versions)
+	target=$(jq -r ".browser_download_url" <<<$version)
+	timestamp=$(jq -r ".updated_at" <<<$version)
+
+	if [[ $1 == "-n" ]]; then
+		echo $target
+	elif [[ $(date -d $timestamp +%s) -lt $(date -r $2 +%s) ]]; then
+		echo "No update for $1"
+	else
+		echo "Updating $1 to $(jq .name <<<$version)"
+		curl -L $target > $2
+		chmod +x $2
+	fi
 }
 download-version 2.13 $(which amm)2.13
 download-version 2.12 $(which amm)2.12
-download-version 3.1 $(which amm)3
+download-version 3.2 $(which amm)3
diff --git a/misc/khal-notify b/misc/khal-notify
index f02e5fe..8b32dbe 100755
--- a/misc/khal-notify
+++ b/misc/khal-notify
@@ -31,7 +31,7 @@ notify() {
 
 
 events=$(khal list now 1h)
-if [[ $events == "no events" ]]; then
+if [[ $events == "No events" ]]; then
 	exit 0
 else
 	notify "Upcoming events" "$(tail -n +2 <<<"$events"| awk '{printf("%s%s", sep, $0); sep="<br>"} END {print ""}')" "$(find /usr/share/icons/ -ipath \*48x48/\*appointment-soon.\* | head -n 1)"
diff --git a/misc/mail-notify b/misc/mail-notify
index 259dfba..574fa34 100755
--- a/misc/mail-notify
+++ b/misc/mail-notify
@@ -1,7 +1,7 @@
 #!/usr/bin/env amm
 
 import $ivy.`com.sun.mail:javax.mail:1.6.2`
-import $ivy.`com.lihaoyi::os-lib:0.7.1`
+import $ivy.`com.lihaoyi::os-lib:0.8.1`
 
 import javax.mail.internet._
 import os.up
@@ -12,25 +12,29 @@ val icon = "/usr/share/icons/Adwaita/48x48/actions/mail-message-new.png"
 val cacheFile = envPath("XDG_CACHE_HOME", os.home/".cache") / "seen-mails"
 val maildir = envPath("MAILDIR", os.home/"Mail")
 
+def from(msg: MimeMessage): String =
+  msg.getFrom.headOption
+    .map(_.asInstanceOf[InternetAddress])
+    .map(addr => Option(addr.getPersonal).map(_.replace("&", "&amp;")).getOrElse(addr.getAddress))
+    .getOrElse("unknown")
+
+
 case class MailInfo(from: String, subject: String, mailbox: String)
-object MailInfo {
-  def fromPath(p: os.Path, maildir: os.Path) = {
+object MailInfo:
+  def fromPath(p: os.Path, maildir: os.Path) =
     val msg = readMessage(p)
     val address = msg.getFrom.head.asInstanceOf[InternetAddress]
     MailInfo(
-      Option(address.getPersonal).map(_.replace("&", "&amp;")).getOrElse(address.getAddress),
+      from(msg),
       msg.getSubject.replace("&", "&amp;"),
       (p/up/up relativeTo maildir).toString
     )
-  }
-}
 
 val session = javax.mail.Session.getDefaultInstance(new java.util.Properties)
 
-def readMessage(path: os.Path) = {
+def readMessage(path: os.Path): MimeMessage =
   val in = os.read.inputStream(path)
   new MimeMessage(session, in)
-}
 
 def envPath(envVar: String, default: os.Path): os.Path =
   sys.env.get(envVar).map(s => os.Path(s)).getOrElse(default)
@@ -45,9 +49,8 @@ val unseenMailPaths = newMailPaths &~ cache
 
 val unseenMails = unseenMailPaths.map(p => MailInfo.fromPath(os.Path(p), maildir))
 
-if (!unseenMails.isEmpty) {
+if !unseenMails.isEmpty then
   val markup = unseenMails.map(msg => s"<b>${msg.from}:</b> ${msg.subject}<br>").mkString
   os.proc("notify-send", s"--icon=$icon", "Mails", markup).call()
-}
 
 os.write.over(cacheFile, newMailPaths.mkString("", "\n", "\n"))
diff --git a/misc/mdcatw b/misc/mdcatw
index b1f105c..d1dc97a 100755
--- a/misc/mdcatw
+++ b/misc/mdcatw
@@ -5,11 +5,10 @@
 if [[ $2 ]]; then
 	encoding=$2
 else
-	encoding=$(chardetect "$1" | grep -oP '(?<=: )\S*')
+	encoding='utf-8'
+	#encoding=$(chardetect "$1" | grep -op '(?<=: )\s*')
 fi
-if ! iconv -f $encoding <<<"" &> /dev/null; then
-	cat "$1"
-elif [[ $encoding != 'utf-8' ]]; then
+if [[ $encoding != 'UTF-8' ]]; then
 	iconv -f $encoding -t 'utf-8' < "$1" | mdcat /dev/stdin
 else
 	mdcat $1
diff --git a/xdg-wrappers/sbt b/xdg-wrappers/sbt
index 96cd937..e337ca2 100755
--- a/xdg-wrappers/sbt
+++ b/xdg-wrappers/sbt
@@ -1,7 +1,7 @@
 #!/bin/zsh
 source ${$(realpath "$0"):h:h}/lib/next-in-path.zsh
 opts=(
-		"-Dsbt.ivy.home=$XDG_CACHE_HOME/ivy"
+	"-Dsbt.ivy.home=$XDG_CACHE_HOME/ivy"
 	"-Dsbt.boot.directory=$XDG_CACHE_HOME/sbt/boot"
 	"-Dsbt.preloaded=$XDG_CACHE_HOME/sbt/preloaded"
 	"-Dsbt.global.base=$XDG_CACHE_HOME/sbt"