Review the messages output by pptext

[windymilla]

Some of pptext's behavior is based on historical circumstances that may not be so relevant today.

See discussions in #641 for various ideas & comments

[rtonsing]

Another repeated Character check is for '*'. It would be better to only report any character only once per line, with all of them highlighted.

[windymilla]

Another repeated Character check is for '*'. It would be better to only report any character only once per line, with all of them highlighted.

It would certainly be possible to only report any character once per line. Without a significant change to the checker dialogs, it's not possible to highlight them all individually though, which is why currently the line.col refers to the start of the first occurrence, and it highlights from the start of the first occurrence on the line to the end of the last one.

[rtonsing]

That is fine. The way some exceptions like '+' are done looks good, just need to extend it to any repeated character. Just saw a file with transcriber's notes set off by lines of 70 '#''s.