use command for detection over which

.bash_profile

@@ -13,7 +13,7 @@ export XDG_STATE_HOME="$HOME/var/lib"   # state data that should persist between
 export XDG_CACHE_HOME="$HOME/var/cache" # user-specific non-essential (cached) data.
 export PATH="$XDG_BIN_HOME:$PATH"       # add our bin in front of PATH, making it take precedence
 
-if which nvim 1>/dev/null; then
+if command -v nvim &>/dev/null; then
 	export EDITOR=nvim           # use neovim as an editor
 	export VISUAL=nvim           # use neovim for visual-based editors
 	export MANPAGER='nvim +Man!' # use neovim as a manual pager