Back in the day, it was possible to define Keyword Shortcuts, also known as Custom keywords in Mozilla.
These were similar to Smart keywords, except that they were defined from within the bookmark dialog, and they allowed a %s search for any item on the right side of the = in an http get, e.g. setting up a keyword shortcut g on www.google.com?q=%s would allow you to type
g firefox "keyword shortcuts"
In the address bar, and firefox would expand this to
www.google.com?q=firefox "keyword shortcuts"
The current "smart keywords" feature only allows you to define shortcuts for searches where there is an existing search bar on a page.
Does the older, more powerful feature still exist in firefox, and if so, how do I access it?
Best Answer
yes it available you add it using the below steps.
Do a search on the site you want to add a quicksearch to.
Bookmark the page you are brought to (the results page).
Open the Properties dialog for your new bookmark.
In your bookmark’s URL (the Location field), find and replace what you searched for with %s (If it does not appear, you cannot use a quicksearch here)
Add a keyword
it will work like a charm when you search with the keyword in latest firefox also.
Hope this helps.