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#
# == About ==
#
# Every page has a og:title meta tag, which has to be generated from the page
# itself. The title tag is automatically filled in by ssg.
# The value for the meta tag is "[TITLE]" and it gets replaced with all text
# inside first h1 header tag.
BEGIN {
h1Index = 0
# When this loop finishes, $0 will have the first line containing an h1 header
# tag, and h1Index will have it's starting position
while (h1Index == 0 && getline < ARGV[1])
h1Index = index($0, "<h1")
close(ARGV[1]) # FILENAME isn't set during BEGIN
# Removes the opening tag and substrings everything that is normally
# inside the heading tag
gsub(/<h1[^>]*>/, "")
title = substr($0, h1Index, index($0, "</h1") - h1Index)
}
"\\[TITLE\\]" {
gsub("\\[TITLE\\]", title)
}
{
print
}
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