Wrong result after calculate and clean value

[Bartosz Kosiorek]

Steps to reproduce:

1. Type 256 number
2. Press "/"
3. Press "2"
4. Press "=". Engine formula is 256/2
5. Press "=". Engine formula is (256/2)/2
6. Press "/". (Now pressing "C" is possible)
7. Press "2". Engine formula is ((256/2)/2)/2
8. Press "C". Engine formula is ((256/2)/2
8. Press "C". Engine formula is ((256/2
5. Press "=". Result 0 is wrong. Should be 128.

The root of cause of this problem is that function "this.pop", removes Close bracket, without removin Start bracket:
  For example (256/2)/2 transform to (256/2 but should transform to 256/2

[Bartosz Kosiorek (gang65)]

I have prepared working patch. I will add it after detailed tests will passed

[Bartosz Kosiorek (gang65)]

To simplify the implementation process, improve visibility, repeat operation (you could trigger it by pressing "=" several times) is displayed.

Before:
  256
  /2 < Press "=" >
  128 < Press "=" >
  64 < Press "=" >
  32

Now:
  256/2 < Press "=" >
  128 < Press "=" >
  /2
  64 < Press "=" >
  /2
  32

With that implementation you could simply map "screenFormula" to "formula".

Thanks !

[Ubuntu Phone Apps Jenkins Bot (ubuntu-phone-apps-jenkins-bot)]

Fix committed into lp:ubuntu-calculator-app at revision 223, scheduled for release in ubuntu-calculator-app, milestone 1.6

[Ubuntu Phone Apps Jenkins Bot (ubuntu-phone-apps-jenkins-bot)]

Fix committed into lp:ubuntu-calculator-app at revision None, scheduled for release in ubuntu-calculator-app, milestone 1.6