To render a Khmer coeng (sub-consonant) it needs 2 inputs: 17D2 + <Base Consonant>.
In the screenshot, I entered two bases ក and យ, and another post-base form ្ស (17D2 + 179F). So visually, there is no ស in the input and I expect the app would lists only the ក, យ, and sub-consonant ្ស, considering sub-consonant as a single letter.
Should there be another option like "Contain only letter in string"?

To render a Khmer coeng (sub-consonant) it needs 2 inputs:
17D2+<Base Consonant>.In the screenshot, I entered two bases ក and យ, and another post-base form ្ស (
17D2+179F). So visually, there is no ស in the input and I expect the app would lists only the ក, យ, and sub-consonant ្ស, considering sub-consonant as a single letter.Should there be another option like "Contain only letter in string"?