Upgrade guide maps htmx:load and htmx:afterOnLoad to htmx:after:init, which fires at different times

The htmx 2 to 4 upgrade material maps both htmx:load and htmx:afterOnLoad to htmx:after:init:

• whats-new-in-htmx-4.md#L162 and #L176
• upgrade-check.py#L52 and #L66
• htmx-upgrade-from-htmx2.md#L147 and #L149

htmx:after:init fires once, when htmx initializes an element that has hx-* attributes. It matches neither htmx 2 event.

Reproduction

A page has <button id="btn" hx-get="/plain" hx-target="#out">. The response is <p id="plain">, with no hx-* attributes. Document listeners log each event.

Event	Page load	After click and swap
2.0.10 htmx:load	body	#plain
2.0.10 htmx:afterOnLoad	none	#btn
4.0.0 htmx:after:init	#btn	none
4.0.0 htmx:after:process	body	#plain
4.0.0 htmx:after:request	none	#btn

Impact

• A htmx:load handler moved to htmx:after:init never runs on swapped content without hx-* attributes, for example tooltip setup.
• A htmx:afterOnLoad handler moved to htmx:after:init runs at page load, not after the request. A row with on htmx:afterOnLoad remove me is removed as soon as the page loads.

Proposed mapping

• htmx:load to htmx:after:process. htmx.onLoad() already listens for this event.
• htmx:afterOnLoad to htmx:after:request. It fires before the swap, while the requesting element is still in the DOM.