Your comments

Can you maybe send me an example project to support@textasticapp.com so I can try to reproduce the issue?
You can add your own syntax definitions to Textastic using TextMate bundles.

I've created a bundle derived from the syntax file at http://adamv.googlecode.com/svn/editors/e/bundles/Windows%20Cmd.tmbundle/Syntaxes/Shell%20Script.tmLanguage

You can download the bundle here:
http://www.textasticapp.com/support/Batch.tmbundle.zip

Have a look at the manual to see how can you install it in Textastic:
http://www.textasticapp.com/v4/manual/lessons/How_can_I_add_my_own_syntax_definitions__themes_and_templates.html

Once you install it, the "Batch File" syntax should be automatically selected when you open .bat or .cmd files.

This syntax definition will be built-in in the next update.
Sorry, but that's not possible due to sandboxing. Safari cannot open local files. You would need to upload the files to a server and enter the URL in Safari.

That's why Textastic has the local web preview feature.
This uses private APIs (private method setScriptDebugDelegate), so I can't really use it.
Sorry that it took me so long, but here it is.

I've created a TextMate bundle from the Sublime Text package which is compatible with Textastic.

You can download the bundle from here: http://www.textasticapp.com/support/Fountain.tmbun...

I've also adapted the themes that come with the Sublime Package:
http://www.textasticapp.com/support/FountainThemes...

Please follow the instructions in the manual to use it with Textastic:
Mac: http://www.textasticapp.com/mac/manual/lessons/How..
iPad: http://www.textasticapp.com/v4/manual/lessons/How_…
iPhone: http://www.textasticapp.com/iphone/manual/lessons/...
Thanks, I'm glad that you guys like it!
Hello, currently there is no such feature. Thanks for the suggestions!
Bat
Since the links I posted before do not seem to work anymore, I've created a bundle derived from the syntax file at http://adamv.googlecode.com/svn/editors/e/bundles/...

You can download the new bundle here:
http://www.textasticapp.com/support/Batch.tmbundle...

Have a look at the manual to see how can you install it in Textastic:
http://www.textasticapp.com/v4/manual/lessons/How_..

Once you install it, the "Batch File" syntax should be automatically selected when you open .bat or .cmd files.
Sorry that it took me so long, but here it is.

I've created a TextMate bundle from the Sublime Text package which is compatible with Textastic.

You can download the bundle from here: http://www.textasticapp.com/support/Fountain.tmbun...

I've also adapted the themes that come with the Sublime Package:
http://www.textasticapp.com/support/FountainThemes...

Please follow the instructions in the manual to use it with Textastic:
http://www.textasticapp.com/mac/manual/lessons/How..