Make shortcode attributes case-insensitive? shortcode_parse_atts

[michael.ecklund]

When specifying default attributes in the callback function of my registered shortcode:

<?php
function some_shortcode_callback( $user_attributes = array() ) {

        $default_attributes = array(
                'someShortcodeAttribute'  => null,
        );
        
        $attributes = shortcode_atts( $default_attributes, $user_attributes );

        print_r($default_attributes);
        print_r($user_attributes);
        print_r($attributes);

        // ....

}

If the user requested this:

[some_shortcode someShortcodeAttribute="test"]

I would expect this:

Array
(
    [someShortcodeAttribute] => 
)

Array
(
    [someShortcodeAttribute] => test
)

Array
(
    [someShortcodeAttribute] => test
)

but instead, I'm getting this:

Array
(
    [someShortcodeAttribute] => 
)

Array
(
    [someshortcodeattribute] => test
)

Array
(
    [someShortcodeAttribute] => 
)

This would always produce the default shortcode attribute and never honor the user specified shortcode attribute.

Which, in my opinion, is wrong. The user requested a camel-case shortcode attribute and the shortcode was built to accept camel-case shortcode attributes. The result should be a parsed camel-case array key and respective value pair.

Can we remove the strtolower calls on the shortcode attributes?

[joyously]

At this late date, it would break more sites to remove it than it would to "fix" something.
Besides, it's documented on ​https://codex.wordpress.org/Shortcode_API
"Attribute names are always converted to lowercase before they are passed into the handler function. Values are untouched."
so your expectation as stated is incorrect.