Wikimedia Bugzilla is closed!

Also reported on [[zh:WP:UX]], and the reporter says prefixing the namespace names works for a specific namespace.

I also have the same idea.

Reassign to default per bug 37789

Is this still happening? It has since been extracted into a stand-alone extension (Extension:Vector).

Moving to mediawiki-core/interface and setting to unconfirmed as it has been changed quite a bit since 2010.

Confirmed still broken in 1.22.0rc2

Thanks for retesting!

Here's a fix since the data is right there in mw.user.options.

Add this function to mediawiki.searchSuggest.js:

		// Get current namespaces
		function getNamespaces() {
			var state = null,
				namespaces = '',
				i = 0,
				limit = 1000;
			do {
				state = mw.user.options.get('searchNs'+i);
				switch (state) {
					case true:
						namespaces += i+'|';
					case null:
						break;
				}
				i++;
			} while (state != null);
			if (namespaces.length > 1) {
				namespaces = namespaces.substring(0, namespaces.length-1);
			}
			return namespaces;
		}

Then, on line 149, change "namespace: 0," to "namespace: getNamespaces(),".

Code I am referencing: https://git.wikimedia.org/blob/mediawiki%2Fcore.git/8bb12babcd4c791c50aa53f14f68224162aaef80/resources%2Fmediawiki%2Fmediawiki.searchSuggest.js

One adjustment on the return so it always at least sends 0:

		// Get current namespaces
		function getNamespaces() {
			var state = null,
				namespaces = '',
				i = 0,
				limit = 1000;
			do {
				state = mw.user.options.get('searchNs'+i);
				switch (state) {
					case true:
						namespaces += i+'|';
					case null:
						break;
				}
				i++;
			} while (state != null);
			if (namespaces.length > 1) {
				return namespaces.substring(0, namespaces.length-1);
			}
			return 0;
		}

I didn't realize how custom namespaces work so the above code wont work. Something like this should though:

// Get current namespaces
		function getNamespaces() {
			var namespaces = '',
				options = mw.user.options.get();
			for(var opt in options) {
				if(opt.substring(0,8) === 'searchNs') {
					if(options[opt] === true) {
						namespaces += opt.substr(8)+'|';
					}
				}
			}
			if (namespaces.length > 1) {
				return namespaces.substring(0, namespaces.length-1);
			}
			else {
				return 0;
			}
		}

Oh yay, thanks for going through the code! 
You are very welcome to use Developer access
  https://www.mediawiki.org/wiki/Developer_access
to submit this as a Git branch directly into Gerrit:
  https://www.mediawiki.org/wiki/Git/Tutorial
Putting your branch in Git makes it easier to review it quickly.
Thanks again!

Somebody please add this to core. I was about to open a request for that.

Change 164893 had a related patch set uploaded by saper:
searchSuggest.js: Pass user ns preferences to API

https://gerrit.wikimedia.org/r/164893