guc
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Documentation
You can edit GUC configuration from the extensions dialog (Tools->Extensions) and selecting "Options".Introduction
GUC can help you create URL's from the selected text. The selected text is run through a list of rules which create the URLs that are made available in the context menu.
Configuring GUC
A GUC rule consists of a menu text, a search string and a URL. The menu text is the text that appears in the context menu. The search string is a JavaScript regular expression that will be evaluated on the selected text. The URL is the link that will open in a new tab when the user selects one of the menu texts in the context menu. The list of rules can either appear directly in the context menu or in a submenu of its own.
How it works
The search expression (a JavaScript regular expression) is evaluated on the selected text. The match string is available as ##. The submatches of the evaluation, if available, are available as #1, #2. #3 and so on. If no search expression is provided, the entire selected text is matched and is made available as ##. If the menu text and the URL contain the above tokens (##, #1, #2, ...), they are replaced by their corresponding values. If the evaluation fails, the menu text is not shown in the context menu.