(command pwd) uses the system's implementation of pwd. At least the GNU
coreutils implementation defaults to -P, which resulted in symlinks being
expanded when switching between directories with nextd/prevd.
I hate doing this but I am tired of touching a fish script as part of
some change and having `make style` radically change it. Which makes
editing fish scripts more painful than it needs to be. It is time to do
a wholesale reformatting of these scripts to conform to the documented
style as implemented by the `fish_indent` program.
