[TRIGGER] cast_section_installed (Feature #192)

That is pretty simple. But I decided that function that would only return installed spells would be even more useful:

#---
## Get list of spells installed in section
## @param $1 - section name
## @param $2 - (optional) variable to set
##
## @Stdout - list of spells if $2 is not set
#---
function get_installed_spells_in_section() {
  local section=$1
  codex_find_section_by_name $section section_path

  for spell in $(codex_get_spell_names $section_path); do
     if spell_installed $spell; then
        local instaled_spells="$instaled_spells $spell" 
     fi
  done

  if [[ -z $2 ]]; then
     echo "$instaled_spells" 
  else
     eval "$2=\"\$instaled_spells\"" 
  fi
}

With that you can do what you wanted pretty simple:

for spell in $(get_installed_spells_in_section some_section); do
  cast $spell
done

With get_installed_spells_in_section function we can do lots of simple functions that could be useful. For example you suggested cast_installed_spells_in_section (or we use one shorter name)...

Such function would look something like this:

function cast_installed_spells_in_section() {
  for spell in $(get_installed_spells_in_section $1); do
    cast $spell
  done
}

However not sure if FUNCTIONS are available in TRIGGERS...

About my last comment. functions from file FUNCTIONS are available in TRIGGERS however not in UP_TRIGGERS.