appdwarf: seemingly fix images sometimes not unounting

README.md

@@ -43,10 +43,3 @@ created when ran since some programs care about that, such as an emulator only
 running games of an expected file extension.
 
 `zzexe` requires `zstd` for both creating and running files and `moreutils` for creating them.
-
-## Known Issues
-
-- Some images may not unmount properly under the default, combined mounting scheme due
-to the inability to use lazy unmounting and some programs still making use of the filesystem
-when `fusermount -u` is run.
-    - Can be worked around with the separate header at the cost of memory/CPU usage.

headers

@@ -27,7 +27,7 @@ if [ ! -d "$DIR" ]; then
 fi
 
 "$DIR/AppRun" "$@"
-fusermount -qu "$DIR"
+fusermount -quz "$DIR"
 rmdir "$DIR" 2> /dev/null
 exit
 EOF

zzexe

@@ -3,7 +3,7 @@ set -e # exit on failure
 IFS=$(printf '\n\t') # smarter ifs
 [ "$1" = "-d" ] && tail -n+10 "$2" | zstd -cd | ifne sponge "$2" && exit
 [ "$1" = "-p" ] && p="$2" && shift 2 # save prefix if present
-{ cat << 'EOF';zstdmt -c19 "$@";} |sed "2s/$/${1##*.})/;7s/^/$p /"| ifne sponge "$1"
+{ cat << 'EOF'; zstdmt -c19 "$@"; } | sed "2s/$/${1##*.})/;7s/^/$p /" | sponge "$1"
 #!/bin/sh
 dir=$(dirname "$0") out=$(mktemp -t .zzXXXX.
 tail -n+10 "$0" | zstd -cd > "$out"