Function
Ideshell_supports_dash_login
Description
Checks if the shell is known to support login semantics. Originally,
this meant --login, but now is meant to mean -l as more shells support -l than --login (notably dash).
Checks if the shell is known to support login semantics. Originally,
this meant --login, but now is meant to mean -l as more shells support -l than --login (notably dash).