git-unicode.awk

function nfd(name) {
    return gensub(/u\\314\\210/,"ü","g",
           gensub(/o\\314\\210/,"ö","g",
           gensub(/a\\314\\210/,"ä","g", 
           gensub(/U\\314\\210/,"Ü","g", 
                  $name))))
}

function nfc(name) {
    return gensub(/u\\314\\210/,"ü","g",
           gensub(/o\\314\\210/,"ö","g",
           gensub(/a\\314\\210/,"ä","g", 
           gensub(/U\\314\\210/,"Ü","g", 
                  $name))))
}

/U\\314\\210/ {  print "git", "mv", nfd($0), nfc($0) }
/u\\314\\210/ {  print "git", "mv", nfd($0), nfc($0) }
/o\\314\\210/ {  print "git", "mv", nfd($0), nfc($0) }
/a\\314\\210/ {  print "git", "mv", nfd($0), nfc($0) }