Add a function to get indices from a RegexMatch

[LilithHafner]

This would provide a generic function

indices(rm::RegexMatch) = (rm.offset-1) .+ eachindex(rm.match)

which is useful, but not essential, as RegexMatch's fields are public. However, a generic function is useful because it allows packages to define something similar for their types that do not have public fields. Motivated by JuliaLang/JuliaSyntax.jl#417, and by an AbstractMatch type I'm currently defining elsewhere in a package.

[jariji]

• Do you mean .+ instead of +?
• I think indices is a confusing name since RegexMatch already has eachindex.

[LilithHafner]

Yes

Perhaps parent_indices or source_indices?

[aplavin]

We already have this:

julia> s = "abc 123 def"
"abc 123 def"

julia> m = match(r"\d+", s)
RegexMatch("123")

julia> parentindices(m.match)
(5:7,)

[LilithHafner]

Thanks! I missed that.