The hotfix introduced in f81ce64a was adding more "/index.html"
components when one used share link button from page already
containing "index.html" component.

Fixes: f81ce64a
Closes: #1

 - all commented lines means the input is empty
 - hash does not have to be exactly first character on the line, it is
   sufficient for it to be first non-whitespace char

Fixes: 1d5acec5

PagesFIT[1] (the default deploy environment for our script) returns HTTP
404 if the URL contains a querystring after subfolder path.
E.g.
 - https://pages.fit.cvut.cz/peckato1/parsingtbl?ahoj returns HTTP 404
 - https://pages.fit.cvut.cz/peckato1/parsingtbl/?ahoj returns HTTP 404
 - https://pages.fit.cvut.cz/peckato1/parsingtbl/index.html?ahoj works!

So, to allow the link copy feature to work in this environment, let's
check if we run in a path that ends with /peckato1/parsingtbl(/)? and
then add the 'index.html' component into the copied URL.

I hope this will get fixed soon. The ticket against ICT FIT is opened
under #31823. This commit should be reverted when the fix lands.

Bug: [FIT #31823]

Wrong reset of 'changed' variable and new follow map assignment in
nested loop.

Last version was matching everytime a terminal was on the top of the
stack and did not respect the input word.