Pasting multi-line command & loading commands from .txt

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Try to paste a multiple line command into the command bar, example:
(
NET USE Z: \\*.*.*.* /USER:* *
xcopy C:\test\*.* Z:\test\*.*
exit
)
2. Only the first line gets pasted "("

What is the expected output? What do you see instead?
I expected the whole command to be pasted

What version of the product are you using? On what operating system?
1.4.0.6, W7 Professional x64

Please provide any additional information below.
The -m putty start up option isn't an option I can use due to circumstance. 
Pasting multiple commands as shown in the example is my only option but this 
isn't possible in superputty and works if I paste straight into putty

An option to load multiple commands from a txt file would be fantastic, as -m 
isn't an option I can use.

Original issue reported on code.google.com by dangam...@live.co.uk on 21 May 2015 at 11:10