Is there a list somewhere of where fish's syntax is compatible and
incompatible with other shells (sh, bash, zsh)?
I'm trying to share as much of my shell configuration as possible between
shells by putting it in files that are evaluated by each shell. For example
I moved all my aliases into ~/.aliases and added . ~/.aliases to my fish
config file. The alias command seems to be compatible, so other shells
should be able to source the same aliases file.
My fish config file also has a lot of variables set with the set or set -x
command. From reading the man files of sh and bash and doing a quick test
with bash, fish's set syntax does not seem to be supported by other shells.
For example in fish:
fish > set foo 'bar'
fish > echo $foo
bar
fish >
but in bash:
bash:$ set foo 'bar'
bash:$ echo $foo
bash:$
and also comparing my fish and bash config files fish seems to use set -x to
set an environment variable, whereas bash uses export.
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