fix-bad-substitution.patch

--- origsrc/fzf-0.12.1/shell/completion.bash	2016-04-24 17:23:52.000000000 +0100
+++ src/fzf-0.12.1/shell/completion.bash	2017-10-03 16:32:41.721647900 +0100
@@ -276,6 +276,8 @@ _fzf_defc() {
   cmd="$1"
   func="$2"
   opts="$3"
+  cmd="${cmd//+/_}"
+  cmd="${cmd//-/_}"
   orig_var="_fzf_orig_completion_$cmd"
   orig="${!orig_var}"
   if [ -n "$orig" ]; then