, but it is not clear what the difference

As I understand it, one brace sets the pre-prompt action unconditionally. Two adds (effectively pushes) the new command(s) to any currently existing.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^4: Can I make the debugger press 'v' for me after every step? by BrowserUk
in thread Can I make the debugger press 'v' for me after every step? by will_

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