Just wanted to confirm that " " are not needed when writing data to a tag such as: exiftool -imagenumber=2222 "DIRsource" , however, always required when copying data from one tag to another tag.
Such as: exiftool "-imagenumber<filenumber" "DIRsource" I do not see this written down/explained anywhere, but probably missed it. I use Windows so always " " vs. ' ' I believe.
The logic evades me, but that is not important, rather that I know the rules for sure.
Thanks for the clarification.