Copy As Html doesn't copy C# or F# colour

[ploeh]

When using the Copy As Html extension with C#, it no longer includes any colour information.

Let's say I'd like to copy this line of code: Using Edit, Copy Html Markup, this is what I get:

var zeroes = new byte[k];

No colour information about any of the keywords.

The same is true if I try to copy some F# code.

Surprisingly, however, the extension does work with Python code: If I copy this as HTML, I get this:

<span style="color:green;">#!/usr/bin/env&nbsp;python</span>
<span style="color:blue;">import</span>&nbsp;numpy
<span style="color:blue;">import</span>&nbsp;matplotlib.pyplot&nbsp;<span style="color:blue;">as</span>&nbsp;plt

Even more surprising, it also works with Haskell, for which I've manually installed a TextMate bundle: becomes

<span style="color:#2b91af;">average</span>&nbsp;<span style="color:blue;">::</span>&nbsp;<span style="color:blue;">Integral</span>&nbsp;a&nbsp;<span style="color:blue;">=&gt;</span>&nbsp;<span style="color:blue;">NE</span>.<span style="color:blue;">NonEmpty</span>&nbsp;a&nbsp;<span style="color:blue;">-&gt;</span>&nbsp;a
average&nbsp;nel&nbsp;=&nbsp;<span style="color:blue;">sum</span>&nbsp;nel&nbsp;`div`&nbsp;<span style="color:blue;">fromIntegral</span>&nbsp;(NE.<span style="color:blue;">length</span>&nbsp;nel)

Like the OP of #252 I've modified the BeforeCodeSnippet and AfterCodeSnippet options. I've removed both (setting them to blank values), which explains why the generated code has no surrounding <pre> tag.

As far as I can tell, it looks as though the languages that have 'native' colouring by Visual Studio somehow break the extension. I haven't tried with Visual Basic, but this seems to apply to both C# and F# in both light and dark mode.

[ploeh]

Here's another observation: The setting UnindentToRemoveExtraLeadingWhitespace is set to True, which I believe is the default. This setting, however, is not consistently applied.

Here's what I highlight: Here's what I get:

        double value1 = 100.00D;
double value2 = 15.99D;
double result = client.Add(value1, value2);

[ploeh]

I've managed to reset the extension to use default values (i.e. defaults for BeforeCodeSnippet and AfterCodeSnippet), but that doesn't help.

[BertanAygun]

Hi @ploeh, can you confirm if you have this option enabled:

We added support for accurate classification for more accurate colors based on Tools -> Options -> Text Editor -> Advanced -> "Use accurate classifier" setting. Please note that copy operations can be slower when this setting is enabled.

Thanks, Bertan

[ploeh]

It's getting late here in Copenhagen, so it's possible that I'm just too tired, but where do I find that setting?

[BertanAygun]

I also just realized that setting no longer exists in product so I will have to investigate and reply back here.

Thanks, Bertan

[olegtk]

"Use accurate classifier" setting was really bad perf-wise in general case and was removed in 17.9. I suggest either just make CopyAsHTML always call accurate classifier or introduce it's own CopyAsHTML-specific option to control whether to use accurate classification, and make it default.

[olegtk]

I have a fix for CopyAsHTML, will push an update soon. The root cause turned to be this change in Roslyn behavior: https://developercommunity.visualstudio.com/t/ITagAggregatorIClassificationTag-no-lo/10595181

[ploeh]

I have a fix for CopyAsHTML, will push an update soon.

Looking forward to it!

The root cause turned to be this change in Roslyn behavior: https://developercommunity.visualstudio.com/t/ITagAggregatorIClassificationTag-no-lo/10595181

Ooh, a breaking change in a Microsoft product!

[ploeh]

Any news on when we can expect the update?

[ploeh]

ping

[iccfish]

Seems this extension out of maintenance?

[heiligerdankgesang]

Thanks for following up, folks. While we do have a fix, there’s some additional work that needs to be completed before we can update the extension with the fix and make it available for use. We don’t yet have a timeline for release, but please keep an eye on this issue for further updates.

[ploeh]

It works again! Thank you; I'm very happy.