[gnuastro-devel] [task #14774] Highlight external links in HTML book

[Mohammad Akhlaghi]

URL:
  <http://savannah.gnu.org/task/?14774>

                 Summary: Highlight external links in HTML book
                 Project: GNU Astronomy Utilities
            Submitted by: makhlaghi
            Submitted on: Tue 12 Dec 2017 12:40:51 PM CET
         Should Start On: Tue 12 Dec 2017 12:00:00 AM CET
   Should be Finished on: Tue 12 Dec 2017 12:00:00 AM CET
                Category: Webpage
                Priority: 5 - Normal
              Item Group: None
                  Status: Postponed
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                  Effort: 0.00

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Details:

Knowing which links in a webpage link to an external source and which are
within the book can help in readability. As part of sr #109106, I noticed that
the French CSS <https://www.gnu.org/style.fr.css> has an interesting solution
to this problem (by placing an arrow before the link name). Here it is:


@media screen { 
#content a[href^="http://"]:before, 
 #content a[href^="https://"]:before { content: "\2197"; }
#content a[href*="fsf.org"]:before,
 #content a[href*="gnu.org"]:before,
 #content #home a[href^="http://"]:before,
 #content a[href*="upgradefrom"]:before,
 #content table a[href^="http://"]:before,
 #content table a[href^="https://"]:before { content: ""; }
}


Maybe other solutions (instead of putting an arrow) would be to change the
colors of such links.

But anyway, it may be interesting to add a link identification system to mark
links to external pages in Gnuastro's CSS
<http://git.savannah.gnu.org/cgit/gnuastro.git/tree/doc/style.css>.




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