[pmwiki-devel] Using "!#anchor heading" markup

[Petko Yotov]

On 04/06/2026 11:57, John Rankin wrote:
> On 04/06/2026 5:34 pm, Petko Yotov wrote:
>> Instead of a separate global variable $DuplicateAnchor, duplicate 
>> anchors are styled in pmwiki-core.css, and can be overridden in 
>> pub/css/local.css:
>> 
>>   a.visible-anchor:not([id]) {
>>     background-color: var(--pmc-yellow2);
>>   }
>> 
>> See/test: https://pmwiki.org/t/VisibleAnchors
> 
> That is quite subtle to my eyesight (the world gets yellower with age;
> YMMV).

I changed the background to brighter orange-red color. I wanted to have 
a color that is available in the core but configurable, and this one is 
in PmSyntax.

At any rate, via custom CSS a webmaster can change the colors and add 
some content before or after:

   a.visible-anchor:not([id]):before {
    content: attr(title);
    /* or: content: "\FFFD"; */ /*�*/
   }

We can even remove the $VisibleAnchor variable and configure the 
character in CSS.

> A more flexible option could be to retain $VisibleAnchor and
> $DuplicateAnchor, and SDV($DuplicateAnchor, $VisibleAnchor); in the
> core. Those who wish to, can over-ride the default.

If we can avoid adding more global variables when alternative 
configuration exists, we should. It is very painful to remove features 
people rely on.

Petko