
Suggest declared variables when typing
Would be great to have feature that show a dropdown list of already used variable when typing a new varaible for example in php
I have this code
$foo = "test1";
$bar = "test2";
And when i type echo $ it lists foo and bar

Google two-factor PAM authentication code support for SFTP connection
An SSH server which uses the Google two-factor PAM module asks for the verification code before password.
See http://www.howtogeek.com/121650/how-to-secure-ssh-with-google-authenticators-two-factor-authentication/

JavaScript Linter

LaTeX expressions in Markdown
Like at stackedit.io.

Find or highlight matching brace/parens/brackets
I just got Textastic for my iPad, and I have to say it's pretty great - it even handles Clojure - my language of choice... and the Automatic brace/brackets is a great feature, but with Clojure, it'd be great if there were a key that allowed me to Jump to the balanced partner of a brace {}, or paren (), or bracket []. This has the effect of "bouncing" between two points in the code - the start, and the end, of the pairings. It's very useful for languages like Clojure where there are a lot of parens...
This is very useful in Vi and Sublime Text 2/3, and a lot of other editors... and I'd really love for it to be added to Textastic for iOS/iPadOS.

Add Shortcuts App into your App
Many apps support Shortcuts in Apple’s Shortcut App (e.g. Working Copy). If you were to add the actions for New File, Append File, Upload/Download File, and SSH Command I could automate my entire build process through the Shortcut App in your App.

add asciidoc in the languages.
Textastic can support asciidoc following the Textmate extension but it is not in the list of supported language, please add it.

DropBox online file preview
The main reason I bought Textastic for iPhone is for presenting objc projects located in my Dropbox account.
And the only feature Textastic miss is the option to preview code from remote servers without actually downloading the files locally.
I'll really appreciate if you'll add this feature in one of the next updates.
Customer support service by UserEcho