Add compatibility so old package names (and options) will still work …

…after the renaming.

components/src/dependencies.js

@@ -77,3 +77,13 @@ export const provides = {
   ],
   '[tex]/all-packages': allPackages
 };
+
+//
+//  Compatibility with v3.0 names for TeX extensions
+//
+export const compatibility = {
+  '[tex]/amsCd': '[tex]/amscd',
+  '[tex]/colorV2': '[tex]/colorv2',
+  '[tex]/configMacros': '[tex]/configmacros',
+  '[tex]/tagFormat': '[tex]/tagformat'
+};

components/src/input/tex/extensions/amscd/amscd.js

@@ -1 +1,4 @@
 import './lib/amscd.js';
+import {rename} from '../../rename.js';
+
+rename('amsCd', 'amscd', true);

components/src/input/tex/extensions/colorv2/colorv2.js

@@ -1 +1,4 @@
 import './lib/colorv2.js';
+import {rename} from '../rename.js';
+
+rename('colorV2', 'colorv2', false);

components/src/input/tex/extensions/configmacros/configmacros.js

@@ -1 +1,4 @@
 import './lib/configmacros.js';
+import {rename} from '../rename.js';
+
+rename('configMacros', 'configmacros', false);

components/src/input/tex/extensions/rename.js

@@ -0,0 +1,16 @@
+//
+// Look for a package name in the package list and change it to a new name
+//   rhen rename tex options for it, if there are any.
+//
+export function rename(oname, nname, options) {
+  const tex = MathJax.config.tex;
+  if (tex && tex.packages) {
+    const packages = tex.packages;
+    const n = packages.indexOf(oname);
+    if (n >= 0) packages[n] = nname;
+    if (options && tex[oname]) {
+      tex[nname] = tex[oname];
+      delete tex[oname];
+    }
+  }
+}

components/src/input/tex/extensions/tagformat/tagformat.js

@@ -1 +1,4 @@
 import './lib/tagformat.js';
+import {rename} from '../rename.js';
+
+rename('tagFormat', 'tagformat', true);

components/src/startup/startup.js

@@ -2,11 +2,12 @@ import './lib/startup.js';
 
 import {Loader, CONFIG} from '../../../js/components/loader.js';
 import {combineDefaults} from '../../../js/components/global.js';
-import {dependencies, paths, provides} from '../dependencies.js';
+import {dependencies, paths, provides, compatibility} from '../dependencies.js';
 
 combineDefaults(MathJax.config.loader, 'dependencies', dependencies);
 combineDefaults(MathJax.config.loader, 'paths', paths);
 combineDefaults(MathJax.config.loader, 'provides', provides);
+combineDefaults(MathJax.config.loader, 'source', compatibility);
 
 Loader.preLoad('loader');