[plug] trying to use emacs "tags" facility

[Derek Fountain]

> I am told that there is a facility within emacs to define "tags".  My
> understanding of this facility is that it allows you to automatically
> navigate to the definition of a given class/function when going through
> C/C++ source code.

Others have offered advice, but here's mine. :o)

Build a TAGS file with this (or similar):

cd /my/src/tree
find . -name "*.[ch]" | xargs etags -a

then fire up emacs. Position the cursor on any symbol (function name, #define, 
etc.) and hit ESC-. then Enter to jump to that symbol definition. The correct 
source file will be loaded if necessary. Hit ESC-* then Enter to jump back 
up. You can build a stack to work your way up and down the function calls.