ASCII characters only validation in "Long free text"

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2 months 3 days ago #161829 by kaz_k
kaz_k created the topic: ASCII characters only validation in "Long free text"
Hi, LimeSurvey all stars,

I want to restrict the input valid characters only to ASCII ones, ie. 0x20-0x7e.

I think it works for Short free text field (please refer Note below).

But I have difficulties for Long free text field.
I made a validation of "/^[\n\r !-~]+$/gis".
But It accepts Kanji (Japanese) characters. It seems that any restriction does not work.
(Please refer the attached screen copy. The bottom is the result.)

I consulted regex101.com/ and found that "/^[\n\r !-~]+$/gis" seems to work. I could type statements of several lines with only ASCII characters with a match of the whole text. When I insert Kanji (Japanese) character, the whole input is invalid (not match).

Does anyone have an idea and/or help ?
Any comments welcome.

Note: I made a validation of "/^[ !-~]+$/" for Short free text field.
It works well.
Attached screen copy shows the results.
Topmost question and middle one have same validation definition of "/^[ !-~]+$/".
Kanji (Japanese) are input in the topmost question and it shows the input is inappropriate(red line and red message).
Only 0x20-0x7e characters are input in the middle question and it shows the input is appropriate(red line and red message).
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