I have come across notation I don't recognise in a vocal score, and no amount of Googling can find it (and it's not in my notation software either).
The notation in question is the sloping line over the middle note. Now I know the meaning of it purely because I am intimate with the actual piece of music, so that's not a problem (it is being used to represent "an upwards slide into the note" from some unspecified leading note). I am wondering if this is a standard notation or just something the composer (or arranger, or transcriber or whoever) made up and, if it is a standard, what it is called.
So in this case it would, instead of being B B G, it would be B, something below B (say A) sliding up into B, then G.