"unexpected EOF" error when converting files with apostrophes in their names

[IshmaelYavitz]

I get an "unexpected EOF" error when trying to convert a file with an apostrophe in the name.

I'm using bash in OS X.

> ls
why-don't-you-work.mov

> screengif --input why-don\'t-you-work.mov --output why-don\'t-you-work.gif
sh: -c: line 0: unexpected EOF while looking for matching `''
sh: -c: line 1: syntax error: unexpected end of file
/usr/local/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4/lib/rmagick_internal.rb:1605:in `from_blob': zero-length blob not permitted `' @ error/blob.c/BlobToImage/343 (Magick::ImageMagickError)
    from /usr/local/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4/lib/rmagick_internal.rb:1605:in `block in from_blob'
    from /usr/local/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4/lib/rmagick_internal.rb:1604:in `each'
    from /usr/local/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4/lib/rmagick_internal.rb:1604:in `from_blob'
    from /usr/local/lib/ruby/gems/2.2.0/gems/screengif-0.0.3/lib/screengif.rb:74:in `start'
    from /usr/local/lib/ruby/gems/2.2.0/gems/screengif-0.0.3/bin/screengif:10:in `<top (required)>'
    from /usr/local/bin/screengif:23:in `load'
    from /usr/local/bin/screengif:23:in `<main>'

> screengif --input "why-don't-you-work.mov" --output "why-don't-you-work.gif"
sh: -c: line 0: unexpected EOF while looking for matching `''
sh: -c: line 1: syntax error: unexpected end of file
/usr/local/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4/lib/rmagick_internal.rb:1605:in `from_blob': zero-length blob not permitted `' @ error/blob.c/BlobToImage/343 (Magick::ImageMagickError)
    from /usr/local/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4/lib/rmagick_internal.rb:1605:in `block in from_blob'
    from /usr/local/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4/lib/rmagick_internal.rb:1604:in `each'
    from /usr/local/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4/lib/rmagick_internal.rb:1604:in `from_blob'
    from /usr/local/lib/ruby/gems/2.2.0/gems/screengif-0.0.3/lib/screengif.rb:74:in `start'
    from /usr/local/lib/ruby/gems/2.2.0/gems/screengif-0.0.3/bin/screengif:10:in `<top (required)>'
    from /usr/local/bin/screengif:23:in `load'
    from /usr/local/bin/screengif:23:in `<main>'

>