Re: [PATCH v2] of [PATCH v2 42/47] gdb_test_multiple: Anchor prompt match if -lbl

[Pedro Alves <pedro@palves.net>]

Hi!

On 2025-05-28 12:59, Pedro Alves wrote:

> +gdb_test_multiple "command" "" -lbl {
> +    -re "^command(?=\r\n)" {
> +	verbose -log <COMMAND>
> +	incr saw_command
> +	exp_continue
> +    }
> +    -re "^\r\nprefix foo(?=\r\n)" {
> +	verbose -log <PREFIX-FOO>
> +	incr saw_prefix_foo
> +	exp_continue
> +    }
> +    -re "^\r\nprefix bar(?=\r\n)" {
> +	verbose -log <PREFIX-BAR>
> +	incr saw_prefix_bar
> +	exp_continue
> +    }
> +    -re "^\r\nprefix (?=\r\n)" {
> +	verbose -log <PREFIX>
> +	incr saw_prefix
> +	exp_continue
> +    }

Reading back, I realized that this example looks a bit silly as is, because you could fix it by
just moving the "prefix " case earlier than the "prefix foo/bar" cases.  I should make the command output
something after "prefix", like "prefix xxx", and then the regexp should match something like:

    -re "^\r\nprefix [^\r\n]*(?=\r\n)" {

That's more like what the original testcase that exposed the issue does.

I'll send an updated patch soon.