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I have some cross platform code that I regularly share between Visual Studio and Xcode (and Vim).

At some point, I modified a string in this code, using Visual Studio. That string somehow ended up with an errant '^H' control character (ASCII 0x08) embedded in it.

The trouble is, this control character is non-printable. It wasn't visible in Visual Studio, nor was it visible in Xcode.

Viewing the source in Vim, I could clearly see the problem. Vim helpfully displays the control character, and problem solved.

Interestingly, when viewing the source via Xcode I can navigate through the string with the cursor - it clearly knows the character is there, as the cursor remains in the same location when traversing over the non-printable character.

So..

  • How can I prevent Visual Studio from inserting errant control characters in the first place? I presume this is a bug and should never happen.

  • Is there any way to have Visual Studio display such control characters, without also showing spaces/tabs?

  • Is there any way to have Xcode display such control characters, without also showing spaces/tabs?

Both environments have an equivalent 'Editor->Show Invisibles' but it's a bit of an all or nothing.. It's not something I want on all the time.

Tim Kane
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