Clarify what does wildcard mean in the Metrics SDK View

[reyang]

Discussed in the 2/28/2022 Specification SIG Meeting.

• Clarified what does wildcard mean.

[ocelotl]

Hey, don't we need also an escape character to be defined here? What if a name includes * or ??

[reyang]

Hey, don't we need also an escape character to be defined here? What if a name includes * or ??

Instrument names have restrictions, * and ? are both illegal characters.

[dyladan]

Looks good this is how JS was already implemented

[jmacd]

If a language provides a shell Glob() function that is readily available, and implements the two characters specified here (? and *) but also provides more matching behavior, is an implementation permitted to use the existing matcher function instead of implementing exactly what is specified here?

Otherwise, we should give an algorithm for implementing this matcher. 😁

[Aneurysm9]

Otherwise, we should give an algorithm for implementing this matcher. 😁

Is this sufficient?

$input = "foo*bar?"
$input =~ s/\?/./g
$input =~ s/\*/.*/g
matchRe = /^$input$/ # /^foo.*bar.$/