Added three Replace options in the Find/Replace dialog

[anastasia-mbithe]

Fixes (partially) #7304
This is still in progress. I am researching the function for the third option, replacing entire cell contents like it's done in Excel.

[rdstern]

I assume you have yet to implement the replace cell. The radio buttons look fine.
Perhaps check the code to update the default name of the replace cell option. If I go to the replace options it seems ok. Then if I go to the cell option, then back to detect (radio button at the top) and then back to replace, then it still has the name detect.

[anastasia-mbithe]

@rdstern, I found a function to replace the cell, you can test it now. I also fixed the bug you referred to in your earlier comment.
It is ready for review.

[rdstern]

@anastasia-mbithe this seems a good start, but you are not yet checking carefully enough yourself first. Here is what I get, almost immediately:

Now I don't get the error if I add quotes round the Y, but that is not done for the other options here. And I don't think - even then - that you are checking for the Ignore Case. So you have a bit to go. I wonder what data you are using? I am using the example from rrefine to start with.

[anastasia-mbithe]

@rdstern, I have changed the function for the cell button. This finds the pattern and replaces everything in the cell with the value specified. However, since the function finding the pattern "grepl()" is a regular expression function, I have disabled the Modifiers group box when the checkbox is checked. The function also supports ignoring case.

Kindly have a look at it.

[rdstern]

Looks good. I hope the code is also ok so it can be merged soon?

[lloyddewit]

@anastasia-mbithe Looks great, thank you.
I just renamed one of the variables.