Introduce MarkupInterpolated and MarkupLineInterpolated extensions

[0xced]

These new methods enable easily writing markup with a nice and intuitive syntax without having to worry about escaping the markup.

string input = args[0];
string output = Process(input);
AnsiConsole.MarkupLineInterpolated($"[blue]{input}[/] -> [green]{output}[/]");

The Interpolated suffix was inspired by the Entity Framework Core FromSqlInterpolated method.

[patriksvensson]

Is there a related issue for this PR?

[phil-scott-78]

@0xced, I've been working on something similar that I wanted to get done with a RFC. It has the same idea you have but takes it a bit further by also adding the ability to format the parameters with styling.

Since you and I seem to be looking in the same direction, think you could be the first to let me know what you think about how this works?

My POC is here - https://github.com/phil-scott-78/Spectre.Console.StringInterpolation

[phil-scott-78]

Been thinking about this some more. Your PR is far more polished than what I put together so I think it should be the base. I can extend it without any breaking changes so it's a better starting point.

My hangup is the name. I like the idea enough that I'm strongly tempted to make it the recommended way to call it every time. And if so it kinda feels like including Interpolated in the name, while accurate, might be a bit too verbose.

Thoughts on changing it to MarkupFormat and MarkupFormatLine? If we went this route I might also provide overrides to match string.Format signatures too for people like F# users that might not want to use the interpolated strings but still want the autoformatting.

[0xced]

And if so it kinda feels like including Interpolated in the name, while accurate, might be a bit too verbose.

I totally agree with you. I went with the Interpolated suffix because this is how Entity Framework Core does it with FromSqlInterpolated and I don't know of any other example of .NET code taking advantage of the FormattableString type, but I haven't really looked.

Thoughts on changing it to MarkupFormat and MarkupFormatLine?

I like them better but I'm afraid they sound too much like methods using composite formatting which is exactly what they are not!

If we went this route I might also provide overrides to match string.Format signatures too for people like F# users that might not want to use the interpolated strings but still want the autoformatting.

I'm not familiar with F# at all and I don't see how your proposal would look like. Care to elaborate?

Anyway, I'm really open to something else, I don't particularly like Interpolated either.

---

By the way, can someone with write access to the repository (probably Patrik or yourself) turn this pull request into a draft?

[nils-a]

can someone with write access to the repository (probably Patrik or yourself) turn this pull request into a draft?

Done.

[phil-scott-78]

We are going through the backlog and this is one item that we (well, I) let sit too long.

@0xced if you get a chance can you review the conflicts? Or alternatively I can build off of what you have and get it merged

[0xced]

I'm away from computer for this week, so please go ahead as you see fit, Phil.

[phil-scott-78]

I'm a bit concerned I broke github by cheating and using their UI to resolve the merge conflict....

[phil-scott-78]

I've built this out a bit more with #761 based on your original commit after I made a mess of this one. Added some documentation and an additional helper method. I'm going to close this PR in favor of the other, but I hope you know that doesn't mean the contribution wasn't appreciated :-)