Hello,

Textastic does not add lines to an existing file when it is opened. I guess that the blank lines actually exist in the file.

What happens when you open the file in another editor (like Apple's TextEdit)? 

If the lines really only show up in Textastic and not in another app, it would be great if you could send me such a file so that I can have a look at it.

You can bring up Find & Replace with Edit -> Find -> Find and Replace or the Cmd-Alt-F keyboard shortcut.

Automatically generating tags sounds like an interesting idea though!

If you press the Ctrl key after the drag starts, the green "+" next to the cursor will change to a small "link" icon. This changes the behavior so that the path is added instead of the files contents.

This is standard Mac Drag & Drop behavior.

You can find instructions for installing the Swift syntax definition in the iOS apps here:

http://feedback.textasticapp.com/topic/454769-swif...

I plan to add it in the next update, but for now you can install it manually.

Hello,

if you are using the full version from the Mac App Store (not the trial version), you should see an iCloud tab in the open dialog (File -> Open) that contains all your iCloud documents. 

Currently not. You can see the complete file name in the text field of the rename dialog: http://www.textasticapp.com/v5/manual/lessons/How_can_I_move__copy_and_rename_files_and_folders.html#step_4

Not at the moment, sorry.

You can add custom syntax definitions to Textastic by using TextMate bundles. See
http://www.textasticapp.com/v5/manual/lessons/How_...

A quick search for "twig tmbundle" in Google brought up this TextMate bundle which should work:
https://github.com/Anomareh/PHP-Twig.tmbundle

You can find a list of hardware keyboard shortcuts at http://www.textasticapp.com/v5/manual/lessons/Whic...

I'm not aware of a shortcut to delete the current line.

I'll see what I can do.