I use
reverse-i-search
Ctrl+r
Ctrl+r
reverse-i-search
Ctrl+shift+r
Ctrl+g
There is a similar question here:
Control-r reverse-i-search in Cygwin bash: how do you "reset" the search?
Found another similar question on Super User:
http://superuser.com/questions/159106/reverse-i-search-in-bash
Apparently, both mention Ctrl+s
, which may do the trick.
Hope that helps. I myself am trying to find a piece of code that does the reverse-i-search
in order to check how it has been implemented exactly.