How to turn off quote mark + vowel gives umlaut?

[Jon Johanning]

When I type the quote mark followed by a vowel Nisus gives an umlaut on the vowel. It didn't used to do that. How can I turn this "feature" off so that I can just get a quote mark followed by the vowel I want?

[Hamid]

It seems you are using 'U.S. International - PC' keyboard layout.
You can disable it by selecting it in System Preferences>Keyboard>Input Sources and pressing the minus sign at the bottom left of the pane:

Input Sources.png (21.47 KiB) Viewed 5210 times

Then use the plus sign to add the keyboard layout of your choice if it is not already in the list of available keyboard layouts.

Also, in NWP Preferences>Languages, set your chosen keyboard.

[Jon Johanning]

Thanks very much for the tip!