Add full options attribute for SWHID inline macro

lib/asciidoctor/swhid-inline-macro/README.adoc

@@ -15,6 +15,14 @@ swh:$SWHID[$CAPTION]
 If no caption is given, the link text will be the core identifier of the SWHID.
 
 
+== Attributes
+
+You can configure certain behavior of the macro with the link:https://docs.asciidoctor.org/asciidoc/latest/attributes/options/[options attribute].
+Here's a list of them...
+
+- `full` will make the entire SWHID as the default link text.
+
+
 == Extra notes
 
 You would use like in the following form `swh:swh:1:snp:6ea7d28dfd4789609e0be2b64179fc9c12931beb[]` but you could also cut off `swh:` from the SWHID if you want to (i.e., `swh:1:snp:6ea7d28dfd4789609e0be2b64179fc9c12931beb[]`) to make it aesthetically pleasing.

lib/asciidoctor/swhid-inline-macro/extension.rb

@@ -12,9 +12,12 @@ class SWHInlineMacro < Asciidoctor::Extensions::InlineMacroProcessor
     # We're only considering `swh:` starting with the scheme version. Also, it
     # looks nice aesthetically.
     swhid = target.start_with?('swh:') ? target : %(swh:#{target})
-    swhid_core_identifier = (swhid.split ';').at 0
-
-    text = attrs['caption'] || swhid_core_identifier
+    default_caption = if attrs.key? 'full-option'
+                        swhid
+                      else
+                        swhid.split(';').at(0)
+                      end
+    text = attrs['caption'] || default_caption
     target = %(https://archive.softwareheritage.org/#{swhid})
 
     doc.register :links, target