Use modifier expansion instead of dirname

ℳichiel ℛoos · ℳichiel ℛoos · commit cdcbe19a9e99 · 2017-05-25T23:33:05.000+02:00
diff --git a/zsh-completions.plugin.zsh b/zsh-completions.plugin.zsh
@@ -1 +1 @@
-fpath+="`dirname $0`/src"
+fpath+="${0:h}/src"
