Bug 25117 - The XS Editor does correctly handle backslash in source
Summary: The XS Editor does correctly handle backslash in source
Alias: None
Product: Xamarin Studio
Classification: Desktop
Component: F# Add-in ()
Version: unspecified
Hardware: PC Windows
: Normal normal
Target Milestone: master
Assignee: Dave Thomas
Depends on:
Reported: 2014-12-05 14:59 UTC by fwaris
Modified: 2015-01-14 11:01 UTC (History)
3 users (show)

Is this bug a regression?: ---
Last known good build:

Repro (1.63 MB, application/zip)
2014-12-05 16:13 UTC, David Hathaway

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Description fwaris 2014-12-05 14:59:10 UTC
The backslash character is problematic in F# source files in Xamarin Studio.

If you accidentally type backslash, it gets hidden and then remains hidden in the source file.

When you then compile the source, the compiler complains about the backslash.

Also the code formatting goes awry if there is backslash in a literal string.

For example any code after the following line is not syntax highlighted correctly:

  let h_vt  = ",\"vt\":\""     

This happens on both the PC and the Mac.
Comment 1 David Hathaway 2014-12-05 16:12:37 UTC
Confirmed - see attached reproduction.

| CSharpSample
| - CSharpSampleViewController.cs <- Line  36, I'm able to include \ characters

| FSharpSample
| - FSharpSampleViewController.fs <-  Line 15, can't include \ characters

If you open the source code for FSharpSampleViewController.fs in a text editor, you'll see the following:


When you open it in Xamarin Studio, you see:

Comment 2 David Hathaway 2014-12-05 16:13:14 UTC
Created attachment 8984 [details]
Comment 3 Dave Thomas 2014-12-09 07:50:15 UTC
This is an issue with semantic highlighting, until this is fixed you can turn it off in the menu:

Xamarin Studio | Preferences | Text Editor | Syntax Highlighting

uncheck "Enable Semantic Highlighting"
Comment 4 fwaris 2014-12-09 09:08:35 UTC

Unchecking "Enable Semantic Highlighting" fixed the issue
Comment 5 Dave Thomas 2015-01-14 11:01:16 UTC
Fixed in fsharpbinding master