通常我会避免使用基于快照的应用程序，但有时我需要它们。
例如 - Markdown Lint Tool 仅以 Snap 命名 mdl。
当文件在主文件夹中时效果很好 -
$ echo "# header" > ~/test.md
$ /snap/bin/mdl ~/test.md ; echo $?
0
但是当文件位于/tmp目录中时它会失败：
$ echo "# header" > /tmp/test.md
$ cat /tmp/test.md
# header
$ /snap/bin/mdl /tmp/test.md
/snap/mdl/140/lib/ruby/gems/2.4.0/gems/mdl-0.9.0/lib/mdl/doc.rb:57:in `read': No such file or directory @ rb_sysopen - /tmp/test.md (Errno::ENOENT)
from /snap/mdl/140/lib/ruby/gems/2.4.0/gems/mdl-0.9.0/lib/mdl/doc.rb:57:in `new_from_file'
from /snap/mdl/140/lib/ruby/gems/2.4.0/gems/mdl-0.9.0/lib/mdl.rb:75:in `block in run'
from /snap/mdl/140/lib/ruby/gems/2.4.0/gems/mdl-0.9.0/lib/mdl.rb:73:in `each'
from /snap/mdl/140/lib/ruby/gems/2.4.0/gems/mdl-0.9.0/lib/mdl.rb:73:in `run'
from /snap/mdl/140/lib/ruby/gems/2.4.0/gems/mdl-0.9.0/bin/mdl:10:in `<top (required)>'
from /snap/mdl/140/bin/mdl:23:in `load'
from /snap/mdl/140/bin/mdl:23:in `<main>'
对于此特定应用程序，没有以下选项 …