4.4 Raise your antenna

Antenna is a tool to keep track of changes in web pages. Using Antenna, you can periodically check if particular pages have been updated, and if they haven’t, know the last time you saw them.

You can start Antenna using the A key in any emacs-w3m buffer. Alternatively, you can go to the special URL about://antenna/; it does the same thing.

4.4.1 How to add your web sites to Antenna

If you want to add the visiting web site to Antenna, type the + key. You will be taken to the customization buffer of w3m-antenna-sites, with all fields already set up for you. You just have to hit the buttons “Save for future sessions” and “Finish”.

+

Add a URL to the Antenna database. If called with a prefix argument, ask for a URL instead of adding the current page (w3m-antenna-add-current-url).

4.4.2 Tracking changes with Antenna

On the Antenna page, you will see two sections: one called “Updated” and another called “Visited”. In the “Updated” section, you will find websites which have changed since the last Antenna update, and in the “Visited” section, the websites which haven’t. In each section, each line stands for one website of the Antenna database, and has the following structure:

‘ * 2002/12/15 16:43 (T) My website’

The first part is the last time the website was updated, or if this information is not available, the last time Antenna noticed a change in this page.

The ‘(T)’ stands for “Time”, it means that the change was detected because the last modification time of that page has changed since the last Antenna update. Another possible value here is ‘S’ (for “Size”), which means that the change has been detected because the size of the page has changed.

The last part of this line is the title you gave to this website when you added it to the database.

Please note that the Antenna database doesn’t get automatically updated, you have to update it each time you want to check if the sites have changed, either by hitting R in the Antenna page, or by passing a prefix argument to the command (start Antenna with C-u A, for example).

If you want to make the Antenna database get updated automatically, set the value of the w3m-antenna-refresh-interval variable to a positive integer which is an interval time in seconds.

A

Visit the Antenna page. If called with a prefix argument, update the Antenna database before displaying it (w3m-antenna).

This document was generated by TSUCHIYA Masatoshi on January 30, 2019 using texi2html 1.82.