specialCharacters needs to be nullable and work with dropSpecialCharacters

[Et3rnal]

🐞 bug report

specialCharacters needs to be nullable and work based on dropSpecialCharacters

Description

I use ngx-formly so I have a custom component which wrappers ngx-mask so I can use it in my ngx-formly forms. I noticed that I can't make specialCharacters attribute optional if I provide it with null or empty array it will block special Characters even when dropSpecialCharacters is set to false!!!

I tried to do [attr.specialCharacters] but that breaks the mask as well

the only way is to remove the specialCharacters all together!

The goal of using ngx-fromly to make reusable form components, so I need all of the ngx mask attributes to be available added to the HTML but only apply what id defined from the ts file

🔬 Minimal Reproduction

Let me know if you need this, there isn't any errors thats all you need

        <input
            [dropSpecialCharacters]="false"
            [specialCharacters]="[]"
            mask="A*@A*.A*"
        />

The @ is getting droped
This shouldn't happen as dropSpecialCharacters is false, also since I must have specialCharacters if you allow it to be null and ignore all special characters or maybe give an option to include all like * if null not an option

or simply fix [attr.specialCharacters]=""

🔥 Exception or Error

None

🌍 Your Environment

Angular Version:
17.3.10

"ngx-mask": "^19.0.6",

Thanks

[asollberger]

I had a similar issue with ngx-mask (used patterns and dropSpecialCharacters, specialCharacters was undefined) and when trying to delete a character it failed here:

ngx-mask/projects/ngx-mask-lib/src/lib/ngx-mask.directive.ts

Line 853 in c8b845b

const specialCharacters = this.specialCharacters().length

const specialCharacters = this.specialCharacters().length ? this.specialCharacters() : this._config.specialCharacters;

I found a workaround for this issue by defaulting the specialCharacters to initialConfig.specialCharacters:

this.specialCharacters = options.specialCharacters ?? [...initialConfig.specialCharacters];