I know that some keyboard layouts come with different characters, which can be confusing when similar-looking keys are in the same place on a US-Int keyboard (n

I know that some keyboard layouts come with different characters, which can be confusing when similar-looking keys are in the same place on a US-Int keyboard (nl-NL has a ¨ character almost exactly where the normal " would be for instance), but that's just the OS following the standard keyboard layout. The actual " you would want for programming is on top of the 2 in that layout. Similarly, in other keyboard layouts you will likely find the characters you intended to type with the right (shift+)altgr key combos. The dead keys setting can be applied to any keyboard layout if you so choose (though it's usually only enabled by default for US International and regional languages that often use dead keys); you could combine dead keys with a ¨-containing keyboard layout if you so choose.