# Convert the Markdown emitted by release-notes.sh to a safe LaTeX appendix.
# Escape character by character so commit messages cannot become TeX commands.
function tex(value, result, i, c) {
    result = ""
    for (i = 1; i <= length(value); i++) {
        c = substr(value, i, 1)
        if (c == "\\") result = result "\\textbackslash{}"
        else if (c == "{" || c == "}" || c == "$" || c == "&" || c == "#" || c == "_" || c == "%") result = result "\\" c
        else if (c == "~") result = result "\\textasciitilde{}"
        else if (c == "^") result = result "\\textasciicircum{}"
        else if (c == "`") result = result "\\textasciigrave{}"
        else result = result c
    }
    return result
}
BEGIN {
    print "% Generated by the Build LaTeX stage; do not edit."
    print "\\chapter{Release Notes}"
    print "\\label{release-notes}"
    print "\\begingroup\\raggedright"
}
/^# Changes in / {
    print "\\section*{" tex(substr($0, 3)) "}"
    next
}
/^- / {
    if (!items) { print "\\begin{itemize}"; items = 1 }
    print "\\item " tex(substr($0, 3))
    next
}
{
    if (items) { print "\\end{itemize}"; items = 0 }
    print tex($0)
}
END {
    if (items) print "\\end{itemize}"
    print "\\endgroup"
}