On FreeBSD, if MANPATH is set it is used verbatim; configuration
files are completely ignored. Therefore, setting MANPATH to (only)
the nvm man dir makes system man pages unreachable.
To get around this, before doing anything else to MANPATH, if it is
empty set it to the output of manpath(1).
One further complication: FreeBSD automatically adds a path to the
man pages path for each path in PATH that ends in "/bin", which
causes "~/.nvm/$VERSION/man" to be added. This interferes with the
subsequent substitution so strip this from MANPATH before the
substitution.
SOURCE_STR currently includes the value of $HOME (at install time).
Change SOURCE_STR to include a literal "$HOME" (to be expanded at
profile runtime) so that sourcing nvm will work if the user changes
their username, shares their profile, et cetera.
Also use the more portable single-square-bracket test.
The git:// transport is vulnerable to man-in-the-middle and DNS
spoofing attacks and its use over untrusted networks should be
discouraged.
Change to the https:// clone url in the install instructions.
Fraser Tweedale