=== Alphabetical Pagination ===
Contributors: mansoormunib
Tags: alphabetical, navigation, index, glossary, pagination
Requires at least: 5.0
Tested up to: 7.0
Requires PHP: 8.1
Stable tag: 2.4.2
License: GPLv2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html

Alphabetical (A–Z, #, 0–9) index for any post type. Shortcode, Gutenberg block, REST API, WooCommerce auto-mount, multilingual, WCAG AA.

== Description ==

**Alphabetical Pagination** (formerly *WP-SNAP Extended!*) builds an alphabetical index of post titles across any public post type. Visitors jump straight to a letter (A, B, C …), browse a paginated list of matching posts, and click through to each post's permalink.

Built for modern WordPress: PHP 8.1+ typed classes, schema-validated options, prepared SQL throughout, semantic markup, no jQuery dependency, no bundled CSS framework, zero front-end JS by default.

= Why use it =

* **Modern PHP 8.1+ architecture** — typed `final` classes under `includes/`, every superglobal sanitised, every echoed value escaped, every DB call prepared.
* **Three embedding surfaces** — `[alphabetical_pagination]` shortcode, `alphabetical_pagination()` template tag, and a native Gutenberg block (`wp-snap-ext/index`).
* **WooCommerce auto-mount** — one click renders the index above the shop loop or product category archives via the native `woocommerce_before_shop_loop` action. No DOM hacks, no `posts_where` SQL filter injection.
* **15 bundled alphabet packs** — English, Arabic, Chinese (Pinyin), German, Spanish, French, Greek, Hebrew, Hindi, Hungarian, Korean (Hangul Jamo), Russian, Thai, Turkish, Urdu.
* **WPML + Polylang aware** — the letter cache keys on current language, so translated post sets render and cache per-language automatically.
* **REST API** — `GET /wp-json/wp-snap-ext/v1/letters` and `/posts` for headless / React / app integrations.
* **Documented developer hook API** — `do_action`/`apply_filters` at every render path so agencies can customise without forking.
* **Transient letter-availability cache** — letter counts cached as transients, busted on `save_post`. Configurable TTL.
* **ACF excerpt fallback** — supports top-level, sub-field, and deep flexible-content / repeater / group lookups via recursive `get_fields()` walk.
* **WCAG 2.1 AA** — `<nav aria-label>`, `aria-current="page"`, `aria-disabled` on empty letters, explicit `role="list"` / `role="listitem"` (Safari + VoiceOver list-stripping fix), descriptive per-letter `aria-label`, visible focus outlines.
* **Zero front-end JS dependency by default** — no jQuery, no Bootstrap, no FontAwesome. Stylesheet is ~1 KB.

= 2.3.0 feature surface =

* **Gutenberg block** — server-rendered `wp-snap-ext/index` block (no JS build pipeline required). Renders identically to the shortcode + template tag.
* **WooCommerce auto-mount** — toggle in **Settings → Alphabetical Pagination → WooCommerce**. Mount hook selectable: `woocommerce_before_shop_loop` (default), `woocommerce_archive_description`, or `woocommerce_before_main_content`.
* **REST API endpoints** — `/wp-json/wp-snap-ext/v1/letters` returns `[{ letter, count, href }]`; `/wp-json/wp-snap-ext/v1/posts` returns paginated post payloads.
* **Developer hooks**:
    * `do_action( 'wp_snap_ext/before_render', $context )`
    * `apply_filters( 'wp_snap_ext/pre_render', $html, $post_type, $display, $args )` — short-circuit
    * `apply_filters( 'wp_snap_ext/query_args', $args, $context )`
    * `apply_filters( 'wp_snap_ext/letter_href', $href, $letter, $base )`
    * `apply_filters( 'wp_snap_ext/excerpt', $excerpt, $post_id )`
    * `apply_filters( 'wp_snap_ext/render', $html, $post_type, $display, $args )`
    * `do_action( 'wp_snap_ext/after_render', $html, $context )`
* **Transient letter-availability cache** — keyed by post_type, taxonomy, term, current language, alphabet pack, and menumisc setting. Invalidated on `save_post`, `deleted_post`, `trashed_post`, `untrashed_post`, and `switch_blog`. Default TTL 1 hour, configurable.
* **WPML + Polylang awareness** — cache key includes `wpml_current_language` or `pll_current_language()`; WP_Query runs with `suppress_filters => false` so translated post sets get filtered.
* **15 multi-language alphabet packs** — pick a script from the dropdown, the freeform Local Alphabet field is overwritten on save.
* **Appearance toggles** — Horizontal / Vertical layout, Uppercase / Lowercase letter case, Disable Empty Letters (renders empty buckets as muted + `aria-disabled`), Hide Pagination If One Page.
* **Generic taxonomy filter** — restrict the index to any registered taxonomy + term (beyond the legacy cat/tag args).
* **Meta-key intra-bucket sorting** — set a post meta key + ASC / DESC to override post_title ordering within each letter bucket. Buckets still derive from post_title.
* **Per-page override map** — `{ post_id => items_per_page }` so /glossary can render 50 items per page while /products renders 20.
* **DOM auto-injection** — for themes that don't expose a hook: render the index in the footer and move it into a CSS selector via ~300 bytes of vanilla JS. No jQuery.

= Backwards compatibility =

* The legacy `wp_snap()` template tag is preserved as a thin alias.
* Legacy URL parameters `?snap=`, `?cp=`, and `?snap_paged=` continue to be honoured alongside the canonical `?alpha_order=` and `?alpha_paged=`.
* Legacy `key_snap_*` option keys are migrated to `wp_snap_ext_*` automatically on activation.

== Installation ==

1. Upload the `wp-snap-extended` directory to `/wp-content/plugins/`.
2. Activate the plugin through the **Plugins** screen in WordPress.
3. Visit **Settings → Alphabetical Pagination** to configure the menu style, alphabet pack, pagination limit, WooCommerce mount, content fallback, REST API, and other options.
4. Embed the index in any post or page with the Gutenberg block, the shortcode, or the template tag from your theme.

== Usage ==

= Gutenberg block =

Add the **Alphabetical Pagination** block from the block inserter (Widgets category) and configure attributes through the block sidebar:

* `postType` — post type to index (default `post`).
* `menu` — `1`, `2`, or `3` (see menu styles in the admin panel).
* `firstload` — `all`, `none`, or `recent`.
* `category` — category ID or `all`.
* `includeChildren` — include category children.
* `taxonomy` + `term` — restrict the index to a specific term of any registered taxonomy.
* `display` — `true` (default) renders the post list under the letter nav; `false` renders only the letter nav.

The block is fully server-rendered — its HTML matches the shortcode and template tag output byte for byte, and there is no JS build pipeline behind it.

= Shortcode =

Drop the shortcode into any post, page, widget, or Site Editor template part:

`[alphabetical_pagination]`

All template-tag arguments are exposed as shortcode attributes:

`[alphabetical_pagination cat="15" child="true" menu="2" firstload="recent" post_type="post" display="true"]`

Attribute reference:

* `cat` — category ID, or `all`.
* `child` — `true` to include category children (default `false`).
* `menu` — 1, 2 or 3 (see menu styles in the admin panel).
* `firstload` — `all`, `none` or `recent`.
* `post_parent` — restrict to posts with a given parent ID.
* `post_type` — defaults to `post`. Whitelisted against registered post types.
* `display` — `true` (default) renders the post list under the letter nav; `false` renders only the letter nav.

The shortcode handler buffers its output through `ob_start()` / `ob_get_clean()`, so the index renders exactly where you place the shortcode rather than breaking out of the surrounding layout.

= Theme template tag =

For deeper theme integration, call `alphabetical_pagination()` directly from a template file. The legacy `wp_snap()` name is retained as a backwards-compatible alias.

`<?php
if ( function_exists( 'alphabetical_pagination' ) ) {
    echo alphabetical_pagination();
}
?>`

Passing arguments works the same as the original `wp_snap()` API:

`<?php
echo alphabetical_pagination( 'cat=15&child=true&firstload=recent' );
?>`

Render an alphabetical index over a custom post type:

`<?php
echo alphabetical_pagination( '', 'glossary_term' );
?>`

Render only the letter navigation (without the post list):

`<?php
echo alphabetical_pagination( '', 'post', false );
?>`

= URL query parameters =

Once embedded, the plugin reads two query parameters on the front end:

* `?alpha_order=A` — the active letter (or bucket, like `A-D`). `alpha_order=misc` selects the `#` bucket of non-alphanumeric titles.
* `?alpha_paged=2` — the active pagination page.

These are isolated to the plugin (they do not collide with WordPress's own `paged` / `tag` / `cat` query vars). The legacy `?snap=` / `?cp=` parameters from earlier versions are still accepted so existing bookmarks keep working.

= Gutenberg block attributes =

| Attribute | Type | Default | Notes |
|---|---|---|---|
| `postType` | string | `post` | Any registered public post type. |
| `menu` | number | `1` | 1, 2, or 3. |
| `firstload` | string | `recent` | `all` / `none` / `recent`. |
| `category` | string | `` | Category ID or `all`. |
| `includeChildren` | boolean | `false` | Include category children. |
| `taxonomy` | string | `` | Any registered taxonomy slug. |
| `term` | number | `0` | Term ID for the taxonomy above. |
| `display` | boolean | `true` | Render the post list under the nav. |

The block supports `wide` and `full` alignment via the `supports.align` declaration in `block.json`.

= REST API =

Two read-only public routes under `/wp-json/wp-snap-ext/v1/`:

**`GET /letters`**

Query params: `post_type` (default `post`), `taxonomy`, `term`.

Response (200 OK):

`[ { "letter": "A", "count": 12, "href": "https://example.com/?alpha_order=A" }, … ]`

**`GET /posts`**

Query params: `post_type`, `taxonomy`, `term`, `letter` (single character or `#`), `page` (default 1), `per_page` (default 10, max 100).

Response (200 OK):

`{ "posts": [ { "id": 42, "title": "...", "permalink": "...", "excerpt": "..." } ], "total": 75, "total_pages": 8, "page": 1, "per_page": 10 }`

Toggle the endpoints on / off under **Settings → Alphabetical Pagination → REST API & Cache**. Lockdown plugins that block public REST surface should leave the toggle off.

= WooCommerce auto-mount =

Enable **Settings → Alphabetical Pagination → WooCommerce → Auto-mount on Shop**. The index renders above the shop loop (or after the archive description / before main content — pick the mount hook from the dropdown) on:

* the WooCommerce shop archive,
* product taxonomy archives (e.g. `/product-category/food`).

The mount uses native WooCommerce actions, never `posts_where`, so it does not collide with caching plugins, SEO plugins, or multilingual plugins that also filter WP_Query.

= Developer hooks =

Customise behaviour without forking through the following hooks (added in 2.3.0):

`add_filter( 'wp_snap_ext/query_args', function( $args, $context ) {
    $args['meta_query'] = [ [ 'key' => 'featured', 'value' => '1' ] ];
    return $args;
}, 10, 2 );`

`add_filter( 'wp_snap_ext/letter_href', function( $href, $letter, $base ) {
    return str_replace( '?alpha_order=', '#letter/', $href );
}, 10, 3 );`

`add_filter( 'wp_snap_ext/excerpt', function( $excerpt, $post_id ) {
    return wp_trim_words( $excerpt, 25, '…' );
}, 10, 2 );`

Full list:

* `do_action( 'wp_snap_ext/before_render', $context )` — fires before the index renders.
* `apply_filters( 'wp_snap_ext/pre_render', $html, $post_type, $display, $args )` — short-circuit; return a string to replace the HTML.
* `apply_filters( 'wp_snap_ext/query_args', $args, $context )` — mutate WP_Query arguments.
* `apply_filters( 'wp_snap_ext/letter_href', $href, $letter, $base )` — rewrite letter link hrefs (router compatibility).
* `apply_filters( 'wp_snap_ext/excerpt', $excerpt, $post_id )` — post-process the resolved excerpt.
* `apply_filters( 'wp_snap_ext/render', $html, $post_type, $display, $args )` — final filter on rendered HTML.
* `do_action( 'wp_snap_ext/after_render', $html, $context )` — fires after the index has rendered.

= Backend settings =

Under **Settings → Alphabetical Pagination** you'll find:

* **Navigational Menu Options** — Local Alphabet, Menu Style, Group Posts, Recent Posts, CSS class names, Ignore When Alphabetizing.
* **Presentational Options** — Fancy URLs, Fancy URL Name, Tabs.
* **Pagination → Items Per Page** — integer, defaults to 10. Registered through the WordPress Settings API and sanitised with `absint()`.
* **Content Fallback → ACF Excerpt Fallback** — checkbox. When on, posts without a native WordPress excerpt fall back to the value of an ACF field instead of the trimmed post content. ACF lookup chain: `get_field()` → `get_sub_field()` → recursive `get_fields()` walk for deeply nested flexible-content / repeater / group sub-fields.
* **Content Fallback → ACF Field Name** — the field name (or key) read by `get_field()` when the toggle is enabled. The plugin gracefully no-ops if ACF (or ACF Pro) is not installed.
* **Appearance → Layout** — Horizontal or Vertical letter strip.
* **Appearance → Letter Case** — Uppercase or Lowercase.
* **Appearance → Disable Empty Letters** — renders empty buckets as muted + `aria-disabled`, with the anchor stripped.
* **Appearance → Hide Pagination If One Page** — skips the Previous/Next strip when the filtered set fits on one page.
* **Language → Alphabet Pack** — pick from 15 bundled scripts. Selecting a pack overwrites the freeform Local Alphabet field on save.
* **Sorting → Meta Key** — post meta key used for intra-bucket ordering instead of post_title.
* **Sorting → Meta Order** — ASC / DESC.
* **Taxonomy Filter → Taxonomy + Term ID** — restrict the index to a single term of any registered taxonomy.
* **WooCommerce → Auto-mount on Shop** + **Mount Hook** — see the WooCommerce section above.
* **DOM Injection → Enable DOM Injection** + **Target Selector** — print the index in the footer and move it into a CSS selector via vanilla JS.
* **REST API & Cache → Enable REST Endpoints** + **Cache TTL** — see the REST API section above.

== Frequently Asked Questions ==

= Does the plugin still work if I'm calling `wp_snap()` from my theme? =

Yes. `wp_snap()` is kept as a thin alias for `alphabetical_pagination()` with the same parameter list, so existing themes continue to work unchanged.

= I need to embed the index inside a Gutenberg page. =

Use the native **Alphabetical Pagination** block (added in 2.3.0) from the block inserter under the Widgets category — it's fully server-rendered and supports wide / full alignment. The block sidebar exposes post type, menu style, firstload, category, taxonomy + term, and display attributes. The legacy approach (Shortcode block with `[alphabetical_pagination]`) still works.

= Does it integrate with WooCommerce? =

Yes. Enable **Settings → Alphabetical Pagination → WooCommerce → Auto-mount on Shop** and the index renders above the WooCommerce shop loop and product category archives automatically. The mount uses native WooCommerce action hooks (`woocommerce_before_shop_loop`, `woocommerce_archive_description`, or `woocommerce_before_main_content` — pick from the dropdown) so it never collides with caching / SEO / multilingual plugins that filter WP_Query.

= Is it WPML / Polylang compatible? =

Yes. The transient letter-availability cache keys on the current language (via `wpml_current_language` filter or `pll_current_language()` function), and `WP_Query` runs with `suppress_filters => false`, so translated post sets are filtered and cached per-language automatically. Switching language busts the cache for that language only.

= Can I get the data over REST for a headless front end? =

Yes. Two read-only public endpoints under `/wp-json/wp-snap-ext/v1/`: `GET /letters` returns `[{ letter, count, href }]`, `GET /posts` returns paginated post payloads filtered by letter. Toggle on / off under **Settings → Alphabetical Pagination → REST API & Cache**.

= How do I display the ACF field instead of the trimmed post content? =

Go to **Settings → Alphabetical Pagination → Content Fallback**, enable **ACF Excerpt Fallback**, and enter the ACF **Field Name** (e.g. `summary`). The plugin tries `get_field()` first, then `get_sub_field()`, then walks the entire `get_fields()` tree recursively to find the field even when it lives inside an ACF flexible-content layout, repeater row, or group. Falls back to a trimmed extract of the post content if ACF returns nothing.

= My theme has no obvious hook to drop the index into. =

Enable **Settings → Alphabetical Pagination → DOM Injection → Enable DOM Injection** and provide a CSS selector (e.g. `.entry-content`, `#primary > article:first-child`). The plugin renders the index into a hidden `<template>` element in the footer and a ~300-byte vanilla-JS snippet moves it into the matched element on `DOMContentLoaded`. No jQuery, no dependencies.

= How do I sort posts by a custom field instead of the title? =

Under **Settings → Alphabetical Pagination → Sorting**, set **Meta Key** to your post meta key and **Meta Order** to ASC or DESC. The letter buckets still derive from `post_title`, but the order of posts *within* each bucket follows the meta value. Useful for sorting glossary terms by importance, products by SKU, etc.

= Can I use a non-Latin alphabet (Arabic, Chinese pinyin, Cyrillic, Greek, Hebrew, Hindi, Korean, Thai, …)? =

Yes. Pick the script from **Settings → Alphabetical Pagination → Language → Alphabet Pack**. 15 packs are bundled: English, Arabic, Chinese (Pinyin A–Z), German (with Umlauts), Spanish (with Ñ), French, Greek, Hebrew, Hindi (Devanagari), Hungarian, Korean (Hangul Jamo), Russian (Cyrillic), Thai, Turkish, Urdu. Selecting a pack overwrites the freeform Local Alphabet field on save. You can also type a fully custom alphabet directly.

= Are the letter counts cached? =

Yes. Letter availability is stored as a transient keyed by post_type / taxonomy / term / current language / alphabet pack / menumisc setting. Default TTL is 1 hour (configurable under **REST API & Cache → Cache TTL**). The cache is invalidated automatically on `save_post`, `deleted_post`, `trashed_post`, `untrashed_post`, and `switch_blog` — so editing a post immediately reflects in the index.

= Can I customise the output without editing the plugin? =

Yes — every render path fires hooks (added in 2.3.0):

* `wp_snap_ext/before_render`, `wp_snap_ext/after_render` — actions.
* `wp_snap_ext/pre_render` — short-circuit filter (return a string to replace the HTML).
* `wp_snap_ext/query_args` — mutate WP_Query args before the query runs.
* `wp_snap_ext/letter_href` — rewrite letter link hrefs (useful for SPA routers).
* `wp_snap_ext/excerpt` — post-process the resolved excerpt.
* `wp_snap_ext/render` — final filter on the rendered HTML.

See the **Developer hooks** section above for code samples.

= Why are pagination URLs using `?alpha_paged=` instead of `?paged=`? =

So they don't collide with WordPress's own paged query variable on category, tag, or archive templates. You can paginate the alphabetical list independently of the surrounding archive.

= Is the plugin accessible (WCAG)? =

Yes — the markup targets WCAG 2.1 AA. The letter navigation is wrapped in a semantic `<nav aria-label="Alphabetical Navigation">`, the active letter carries `aria-current="page"`, empty letters carry `aria-disabled="true"`, every link has a descriptive `aria-label`, and the stylesheet provides visible `:focus-visible` outlines. Explicit `role="list"` / `role="listitem"` are emitted because Safari + VoiceOver strip the implicit list role when `list-style:none` is applied.

== Changelog ==

= 2.4.2 =
* Bumped "Tested up to" to WordPress 7.0. No functional changes.

= 2.4.1 =
* readme.txt metadata fix — limited Tags to wp.org's maximum of 5 and trimmed the short description to the 150-character limit. No functional changes.

= 2.4.0 =
* **Tabbed settings page** — the admin panel is reorganised into four tabs using the standard WordPress `nav-tab` UI: **General**, **Styling**, **Integrations**, and **Developer**. After saving, you are returned to the tab you were editing (Post/Redirect/Get), not the first one.
* **Styling mode** — new "Styling" choice on the Styling tab:
    * *Default CSS* — loads the bundled `snap-style-default.css` skin (styled letter strip, post cards, pagination buttons) that mirrors the plugin's preview.
    * *No CSS (theme consistent)* — loads only the minimal structural `snap-style.css` so the output inherits your theme's typography, colours, and button styles. This remains the default, so existing sites are unchanged on update.
    * Only the selected stylesheet is enqueued, and only on pages that actually render the index.
* **Developer tab** — copy-paste reference with `<pre><code>` snippets for the `[alphabetical_pagination]` shortcode, the `alphabetical_pagination()` template tag (with a `function_exists()` guard and the `wp_snap()` alias note), and the `wp_snap_ext/*` action/filter hooks.

= 2.3.0 =
* **Gutenberg block** — new server-rendered `wp-snap-ext/index` block. Drop the alphabetical index into any post, page, or Site Editor template with one click. No JS build pipeline required; block.json + render.php only.
* **WooCommerce auto-mount** — toggle the new "Auto-mount on Shop" setting and the index renders above the shop loop / product category archives automatically via the native `woocommerce_before_shop_loop` (or `woocommerce_archive_description` / `woocommerce_before_main_content`) action. No DOM hacks, no `posts_where` SQL injection.
* **REST API** — public endpoints under `/wp-json/wp-snap-ext/v1/`:
    * `GET /letters?post_type=…&taxonomy=…&term=…` → `[ { letter, count, href } ]`
    * `GET /posts?post_type=…&letter=A&page=1&per_page=10` → `{ posts, total, total_pages }`
    * Toggle on the settings page; uses the transient cache so repeated calls hit memory.
* **Documented developer hook API** — every render path now fires:
    * `do_action( 'wp_snap_ext/before_render', $context )`
    * `apply_filters( 'wp_snap_ext/pre_render', $html, $post_type, $display, $args )` (short-circuit)
    * `apply_filters( 'wp_snap_ext/query_args', $args, $context )`
    * `apply_filters( 'wp_snap_ext/letter_href', $href, $letter, $base )`
    * `apply_filters( 'wp_snap_ext/excerpt', $excerpt, $post_id )`
    * `apply_filters( 'wp_snap_ext/render', $html, $post_type, $display, $args )`
    * `do_action( 'wp_snap_ext/after_render', $html, $context )`
* **Transient letter-availability cache** — letter counts are cached as transients keyed by post_type / taxonomy / term / current language / alphabet pack. Invalidated on `save_post`, `deleted_post`, `trashed_post`, `untrashed_post`, `switch_blog`. Default TTL 1 hour (configurable).
* **WPML + Polylang awareness** — the cache key includes the current language (via `wpml_current_language` or `pll_current_language()`) and WP_Query runs with `suppress_filters => false`, so translated post sets are filtered and cached per-language.
* **Multi-language alphabet packs** — pick from 15 bundled scripts (English, Arabic, Chinese pinyin, German, Spanish, French, Greek, Hebrew, Hindi, Hungarian, Korean Jamo, Russian, Thai, Turkish, Urdu). Selecting a pack overwrites the freeform Local Alphabet field on save.
* **Appearance toggles** — Horizontal/Vertical layout, Uppercase/Lowercase letter case, "Disable empty letters" (renders empty buckets as muted + `aria-disabled`), "Hide pagination if one page".
* **Generic taxonomy filter** — restrict the index to any registered taxonomy + term ID (beyond the legacy cat/tag args).
* **Meta-key intra-bucket sorting** — set a post meta key + ASC/DESC to override post_title ordering within each letter bucket. Buckets themselves still derive from post_title.
* **Per-page override map** — store a `{ post_id => items_per_page }` array so /glossary can render 50 items per page while /products renders 20.
* **DOM auto-injection** — for themes that don't expose a hook: render the index into a hidden `<template>` in the footer and move it into a CSS selector via ~300 bytes of vanilla JS. No jQuery dependency.
* **Accessibility preserved** — `<nav aria-label>`, `aria-current="page"`, explicit `role="list" / role="listitem"`, descriptive `aria-label` per letter link, `aria-disabled` on empty letters, visible focus outlines.

= 2.2.0 =
* URL parameters migrated to `?alpha_order=` and `?alpha_paged=` (legacy `?snap=` / `?cp=` / `?snap_paged=` still honoured).
* Post titles are now rendered as links to each post's permalink.
* Accessibility (WCAG AA): letter navigation wrapped in a semantic `<nav aria-label="Alphabetical Navigation">`, every letter link carries a descriptive `aria-label`, the active letter is exposed via `aria-current="page"`, and visible focus outlines are provided in the stylesheet.
* New "Learn More" CTA below each post excerpt linking to the post permalink, with an `aria-label` that includes the post title.
* New **Content Fallback** settings section: toggle "Use ACF field fallback if post excerpt is missing" + text input "ACF Field Name". When enabled and ACF is active, the plugin reads the configured field via `get_field()` for posts without a native excerpt.
* Frontend post cards now show: linked title → excerpt (native → ACF fallback → trimmed content) → Learn More button.

= 2.1.0 =
* Rebranded as **Alphabetical Pagination**. Existing directory structure and option keys are preserved.
* New template tag `alphabetical_pagination()` (the legacy `wp_snap()` is kept as a backwards-compatible alias).
* New `[alphabetical_pagination]` shortcode lets the index be embedded in any post or page. Attributes mirror the template tag arguments (`cat`, `child`, `menu`, `firstload`, `post_parent`, `post_type`, `display`).
* New "Items Per Page" admin setting registered through the WordPress Settings API (`register_setting`, `add_settings_section`, `add_settings_field`) and sanitised with `absint()`. Defaults to 10 if unset.
* The post loop is now paginated; Previous / Next + numbered links are rendered through `paginate_links()` below the alphabetised post list.

= 2.0.0 =
* Requires PHP 8.1+. Plugin is now organised as typed classes under `includes/`.
* Security: prepared statements on the legacy "ignore words" SQL path, full sanitisation of `$_GET` / `$_POST` / `$_SERVER` reads, escaped output, nonce + `manage_options` capability check on the settings page (was the deprecated numeric level "8").
* Settings now stored under the `wp_snap_ext_*` option prefix. Legacy `key_snap_*` values are migrated automatically on activation.
* Stylesheet is registered through `wp_enqueue_scripts` and only enqueued on pages that actually call `wp_snap()`.
* Standard navigation queries now use `WP_Query` instead of a hand-rolled SQL string.
* Backwards-compatible `wp_snap()` template tag retained.

= 1.0.0 =
* Original Dinwebb fork of Nathan Olsen's WP-SNAP! plugin.