Why can I not type certain upper case accented letters using the option key with Turkish input

input-sourcekeyboard

My macOS is configured with Turkish Q - Legacy input source. To get accented letters, typically one would type Option + <key> to get the accented version of it, e.g., Option + C to type ç or Option + Shift + C to get Ç.

However, this Option + Shift combination for upper case letters DOES NOT work for some letters, even though the lower case version works just fine. Also, I can press and hold Shift + <key> to get the accented letter mini menu to appear on top of the typed letter. This, thought, is a major typing speed impediment.

What can I do to be able to type all the upper case accented Turkish letters on my keyboard?

Examples where upper case accented letters CAN be typed with Option + Shift:

Ç
Ğ
Ö
Ü

Examples where upper case accented letters CANNOT be typed with Option + Shift; no output is produced in the app/document:

İ
Ş

Examples where even Press+Hold+<key> does not bring up mini menu above letter:

İ

Now all of the above works for the lower case version of the same letters, i.e., hold Option and type s to get ş.

Best Answer

Thanks to tips from @TomGewecke, I was able to find the app/shortcut key combo that took over the letters I was trying to type.

Amethyst (a great window management tool) uses Option + Shift + I to "Display current layout" and Option + Shift + S to "Select Wide layout".

I don't have any use for those functions, so I removed the corresponding shortcuts.

For future reference, I am wondering if there is a way to ask macOS for "the list of currently assigned shortcut keys and what app has defined them".

See Update below...

It seems (only) the input source "French - Numerical" will behave like Window Caps Lock (with iNVERSE sHIFT):

keyboard layout French - Numerical

Found that info here.

But note that this will come with a rather unusual keyboard layout (at least for me).

keyboard layout French - Numerical1

keyboard layout French - Numerical2

Update: Using Ukelele this can be applied to all keyboard layouts:

Thanks Daniel for pointing the right direction.

Open Ukelele and save your (current) layout to a file (e.g. by "New from current input source" and "Save"):

New from current input source

Open the .xml file in a text editor and find the mapIndex that you want to use for the combination ⇧ + ⇪ (shift + caps-lock). For German I used mapIndex="0". Insert this line:

<modifier keys="shift caps"/>

Find all other occurrences of this combination and comment them out (or delete the lines). Again for German it's:

<keyMapSelect mapIndex="1">
<modifier keys="anyShift"/>
<modifier keys="shift rightShift? caps? rightOption? rightControl"/>
<modifier keys="shift rightShift? caps? rightOption rightControl?"/>
<!--<modifier keys="shift rightShift? caps rightOption? rightControl?"/> -->
    </keyMapSelect>

shift caps

Re-open the modified file with Ukelele.

Here is a comparison of the "German" layout before and after the modification:

layout 1

layout 2

Follow the instructions in Ukelele to create a new input source (Name, ID, installation).

I didn't test the modified file, should work though.

Best Answer

Related Solutions

How to disable visual display of modifier keys

MacOS – type in inverse case, lIKE tHIS, with caps lock on

See Update below...

Update: Using Ukelele this can be applied to all keyboard layouts:

Related Question