Chrome programmers have switched out a third-party software package in favor of their own as part of Google's attempt to speed its open-source browser up more.
Thus was born Google's own project, Irregexp, the headline feature in the new developer preview version of Chrome, 220.127.116.11 (release notes). Check the blog post if you're curious about the technical details of Google's choices about native code generation, backtracking avoidance, and intermediate automaton representation.
Previously, Chrome used a supporting software package, or library, called JPCRE, a variation by the Webkit browser project of the PCRE package. That eased compatibility issues by making Chrome behave more like Apple's Safari, which is based on Webkit, but Google thinks it's got the compatibility issue in hand.
"During development we have tested Irregexp against one million of the most popular Web pages to ensure that the new implementation stays compatible with our previous implementation and the Web," the programmers said.
More changes are coming to V8, though, and Google will detail some at its May developer conference, Google I/O. One session there will focus on the software, including "initiatives that will propel V8 to the next performance level," according to the session notes.
Separately, Google also released the new version 18.104.22.168 of Chrome for both its stable and beta version users on Wednesday. That version fixed a security problem and an issue with Chrome's incognito mode.