With written-down songs in the form of lyrics together with chord names, the chord names are often left out for recurrent parts. (Due to limited paper space - you try to minimize the need for turning pages while performing a song).
However, this is inconvenient, when it comes to sight-reading. One must frequently jump between the verses with the eyes to keep track of the chord progression and the lyrics.
Now, I'm looking for any tool, library or script that processes existing text files and tries to intelligently put the correct missing chord line above a lyric line.
A syllable-precise positioning isn't possible without the melody, but is not necessary anyway. Automatic part guessing might be the tricky part. The output isn't needed to be perfect, but make life easier.