Node text gotchas

"Invisible" nodes: idea of Node#text is to provide "plain readable" version of page fragment; so, some node types give intentionally empty text. This relates to and templates (the templates matter is complicated, though)

para = Infoboxer::Parser.paragraphs('')
para.text

# But
para.lookup(Ref).text

Paragraph-level nodes return text, ending with "\n\n". This way paragraph's text can be just .join-ed to obtain pretty rendered paragraphs. But if you want to just output TOC or something like this, extra "\n\n"-s can be irritating. For such cases there's method with cumbersome name #text_ -- which is kinda synonym for node.text.strip

page = Infoboxer.wp.get('Argentina')
page.headings.each{|h| puts ' ' * h.level + h.text}
# Output:

# ...

# But
page.headings.each{|h| puts ' ' * h.level + h.text_}
# Output:

# ...

Tables is rendered (somewhat experimentally) with [terminal-table] gem. This looks pretty good on demo, but I'm not sure at all that this approach is not an overkill. Let's try and decide.

puts Infoboxer.wp.get('Sri Lanka').tables.first.text
# Output:
# +----------------------------------------+--------------+------------+---------+-------------+
# |  Administrative Divisions of Sri Lanka |
# +----------------------------------------+--------------+------------+---------+-------------+
# | Province                               |  Capital     |  Area (km) |  Area   |  Population |
# |                                        |              |            | (sq mi) |             |
# | Central                                | Kandy        |  5,674     |         |  2,556,774  |
# | Eastern                                |  Trincomalee |  9,996     |         |  1,547,377  |
# | North Central                          | Anuradhapura |  10,714    |         |  1,259,421  |
# | Northern                               |  Jaffna      |  8,884     |         |  1,060,023  |
# | North Western                          | Kurunegala   |  7,812     |         |  2,372,185  |
# | Sabaragamuwa                           |  Ratnapura   |  4,902     |         |  1,919,478  |
# | Southern                               | Galle        |  5,559     |         |  2,465,626  |
# | Uva                                    |  Badulla     |  8,488     |         |  1,259,419  |
# | Western                                | Colombo      |  3,709     |         |  5,837,294  |
# +----------------------------------------+--------------+------------+---------+-------------+