I am trying to merge two .nib files. FileMerge has no problem showing the comparison of the two files. I am trying to keep all the settings in one file (i.e. right side) except for two settings that I want to copy from the other file (i.e. left side). The differences are just one line of code each that changes the integer value of a autoresizingMask key. So it shouldn't be hard to merge. I would use TextEdit if it would allow me to open a .nib file.
However I get the error "This file type cannot be merged." I tried playing with the FileMerge > Preferences > Filters settings for the .nib extension as mentioned in the answer to a similar question posted on this site but had no luck. As far as I can tell the Display setting should be left as "Filtered" for a .nib since unfiltered it is not readable and I tried toggling the Apply selection. I assume that the actual Filter used should itself not be changed or modified?
Is there any common reason why two .nib files that FileMerge has no problem showing in the comparison window cannot be merged?
Thanks