This is an extension for Visual Studio 2010 that detects and offers to fix mixed tabs and spaces. If it detects mixed tabs and spaces whenever you save or load a file, it displays a margin in the editor with options to tabify or untabify the entire file. It also has options to never show again (for a file for that run of VS), and it can be closed or ignored so that it won't have any effect.

See my blog at http://blogs.msdn.com/noahric for more information about my extensions and writing your own editor extensions.

Version history:

v2.3 - VS2013 support and fixed "Don't show again" to at least hide the information bar. It doesn't hide anything permanently, still.

v2.2 - VS2012 support.

v2.1 - Fix issue where the information bar keeps showing up even though tabify has no effect. Also workaround an issue in the VS editor where the built-in tabify/untabify operations make many more edits than are necessary, which causes perf issues on large files with few lines to tabify or untabify.

v2.0.2 - Reduced timer for showing the margin to 175 ms in rich-client experience (courtesy Steven Schermerhorn).

v2.0.1 - Actually updated for RC/RTM. v2.0 had a CopyLocal reference to a dll that has been removed in the RC, so the extension actually wasn't working at all.

v2.0 - Updated for RC/RTM.

v1.0 - Initial submission to VS Gallery