I'm looking for an option on ctags to append tags from specified files to global tags file. there is --append=yes option. but it is blindly appending tags to the global tags file. I want something that replaces previous tags with new tags.
 
for example, I have global tags file say gtags generated out of abc.c def.c and xyz.c source files. Now I change something in abc.c and now I want to replace previous tags of abc.c in gtags file with new ones.
 
appreciate any help I can get on this,
thanks
Sucharitha Chapparam
Avaya Inc,
4120 Dublin Blvd, Dublin-94568
925-479-2644   schapparam@avaya.com