fix(output): quote symbolic links correctly when their destinations contain spaces

[zedseven]

There's an issue with the way symlinks are quoted when their destination has spaces in the name.

Below is a set of test cases that demonstrates the problem:

λ eza -l bug-test
.rw-r--r-- 0 zacc  9 Dec 17:53 'file with spaces'
lrwxrwxrwx - zacc  9 Dec 17:54 'symlink-to-dest-with-spaces -> /tmp/file with spaces' # <-- this one
lrwxrwxrwx - zacc  9 Dec 17:53 symlink-without-spaces -> /tmp/test
lrwxrwxrwx - zacc  9 Dec 18:24 ''symlink with spaces to dest with spaces' -> /tmp/file with spaces' # <-- and this one
lrwxrwxrwx - zacc  9 Dec 17:53 'symlink with spaces' -> /tmp/test

In symlink-to-dest-with-spaces, the link has no spaces, but the destination does. eza quoted the entire link display, instead of just the destination.

In symlink with spaces to dest with spaces, the link and destination have spaces. eza quoted the link and then also the entire link display, instead of quoting each separately.

The issue is caused by the fact that the escape function always inserts the starting quote at the very beginning of the finished string, instead of only inserting it before the new part.

It seems to have been introduced in #318.

[cafkafk]

Nice, thanks for fixing this!

Integration tests pass, and my testing of the expected behavior indicates that this is working as expected, without introducing any regressions. Merge incoming!