Thanks a lot for sharing this information!

I'm currently working on Textastic for Mac and iCloud support for iOS and Mac.

Rest assured that the development of the app isn't going to stop.

You would have to transfer the source files to Textastic using one of the file transfer methods like Dropbox, (S)FTP or WebDAV. Have a look at the manual for descriptions of the various options: http://www.textasticapp.com/v4/manual/

Instead of tabs, please tap on the current file name to open a list of recently opened files:

http://www.textasticapp.com/v4/manual/lessons/How_can_I_show_a_list_of_recently_opened_files_How_can_I_close_the_current_file.html

Do you have any idea when exactly it happens so that I can try to reproduce it here? Thanks!

Yes, it is a problem with the "Open In" mechanism of iOS 6. It didn't happen in earlier versions of iOS as far as I am aware.

This is a bug in iOS 6 in combination with a duplicate definition of the .cs extension in Textastic's info.plist file. I'll fix this in the next update.

Textastic uses syntax definitions from TextMate. You can add your own custom syntax definition to the app:

http://www.textasticapp.com/v4/manual/lessons/How_can_I_add_my_own_syntax_definitions__themes_and_templates.html

Textastic uses the VHDL syntax definitions that is available at https://github.com/bpadalino/VHDL.tmbundle

You can try to add the new syntax to the language definition. The language is explained in the TextMate manual: http://manual.macromates.com/en/language_grammars

You can tap on the "+" button in the Files section and choose "Image". Then you can add an image from the camera or the photo library.

It's on my todo list.