On Tue, Dec 13, 2022, at 6:38 AM, Emanuele Torre wrote: > On Tue, Dec 13, 2022 at 03:07:16AM -0500, Lawrence Velázquez wrote: >> Of course not. I only meant to demonstrate that "export" always >> creates global variables, so a function that utilizes "declare -gx" >> actually behaves more like "export" then your alias does. > > This is a little inaccurate. > > `export' doesn't always act on the *global* variable, but "declare -g" > does. > > The differences are that: > * `declare' (without -g), always acts on variables in the current > dynamic scope, and will create a new variable in the current dynamic > scope if no variable with the name it was looking for exists. > > * `export' and `readonly' act on the variable they can see, and set > their "x"/"r" attribute; they will only create a new variable (in the > global scope) if no variable with the name they were looking for > exists in any dynamic scope. Just like simple "a=b" assignments.
You're right, thanks for clarifying. I was thinking exclusively about the behavior when creating variables. -- vq
