Blind-spots that seem to be ignored and not converted to a link

[nima]

When a matching pattern appears in certain places, it is not converted into a link. In the following non-exhaustive list, I have a few examples of what is converted and what is ignored; assume that the matching pattern is start:(\w+):end

*this bold text will have the matching token start:XYZ:end ignored
- here, start:ABC:end will be converted
- [ ] here, start:DEF:end will NOT be converted