Hello, It seems the git version of Pentadactyl doesn't work on Firefox 42.0. I have changed the variable 'em:maxVersion' to '42.' in the file 'pentadactyl/install.rdf' and it works. The maintainer of the package 'pentadactyl-git' on archlinux has done the same thing: However, I have noticed that the commands:help and:helpall seems to be broken. I don't know if it is due to the update or not though. EDIT: I use Arch Linux. When I type the ':help' command, I have this error: Sorry, help file 'intro' not found EDIT2: It seems that the:help command makes firefox unable to be exited normally, the process is still running in background when you close firefox normally, you have to kill the process yourself.

Firefox 42.0 For Mac Windows 10

Thanks for the report. Best regards.

This document describes the user agent string used in Firefox 4 and later and applications based on 2.0 and later. For a breakdown of changes to the string in Gecko 2.0, see (blog post). See also this document on and this. General form The UA string of Firefox itself is broken down into four components: Mozilla/5.0 ( platform; rv: geckoversion) Gecko/ geckotrail Firefox/ firefoxversion. Mozilla/5.0 is the general token that says the browser is Mozilla compatible, and is common to almost every browser today.

platform describes the native platform the browser is running on (e.g. Windows, Mac, Linux or Android), and whether or not it's a mobile phone.

Firefox OS phones simply say ' Mobile'; the web is the platform. Note that platform can consist of multiple '; '-separated tokens.

See below for further details and examples. rv: geckoversion indicates the release version of Gecko (such as ' 17.0'). In recent browsers, geckoversion is the same as firefoxversion. Gecko/ geckotrail indicates that the browser is based on Gecko. On Desktop, geckotrail is the fixed string ' 20100101'. Firefox/ firefoxversion indicates the browser is Firefox, and provides the version (such as ' 17.0'). from Firefox 10 on mobile, geckotrail is the same as firefoxversion.

The recommended way of sniffing for Gecko-based browsers (if you have to sniff for the browser engine instead of using feature detection) is by the presence of the ' Gecko' and ' rv:' strings, since some other browsers include a ' like Gecko' token. For other products based on Gecko, the string can take one of two forms, where the tokens have the same meaning except those noted below: Mozilla/5.0 ( platform; rv: geckoversion) Gecko/ geckotrail appname/ appversion Mozilla/5.0 ( platform; rv: geckoversion) Gecko/ geckotrail Firefox/ firefoxversion appname/ appversion. appname/ appversion indicates the application name and version. For instance, this could be ' Camino/2.1.1', or ' SeaMonkey/2.7.1'.

Firefox/ firefoxversion is an optional compatibility token that some Gecko-based browsers may choose to incorporate, to achieve maximum compatibility with websites that expect Firefox. Firefoxversion will generally represent the equivalent Firefox release corresponding to the given Gecko version. Some Gecko-based browsers may not opt into using this token; for this reason, sniffers should be looking for Gecko — not Firefox! Whether this token appears is controlled by the 'general.useragent.compatMode.firefox' boolean pref. Mobile and Tablet indicators. Only from Firefox 11 onwards.

The platform part of the UA string indicates if Firefox is running on a phone-sized or tablet device. When Firefox runs on a device that has the phone form factor, there is a Mobile; token in the platform part of the UA string. When Firefox runs on a tablet device, there is a Tablet; token in the platform part of the UA string instead. For example: Mozilla/5.0 (Android 4.4; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0 Mozilla/5.0 (Android 4.4; Tablet; rv:41.0) Gecko/41.0 Firefox/41.0. The version numbers are not relevant.

Avoid inferring materials based on these. The preferred way to target content to a device form factor is to use CSS Media Queries. However, if you use UA sniffing to target content to a device form factor, please look for Mobi (to include Opera Mobile, which uses 'Mobi') for the phone form factor and do not assume any correlation between 'Android' and the device form factor. This way, your code will work if/when Firefox ships on other phone/tablet operating systems or Android is used for laptops.

Also, please use touch detection to find touch devices rather than looking for 'Mobi' or 'Tablet', since there may be touch devices which are not tablets. Firefox OS devices identify themselves without any operating system indication; for example: 'Mozilla/5.0 (Mobile; rv:15.0) Gecko/15.0 Firefox/15.0'.

The web is the platform. Windows Windows user agents have the following variations, where x.y is the Windows NT version (for instance, Windows NT 6.1).

Windows version Gecko user agent string Windows NT on x86 Mozilla/5.0 (Windows NT x. Y; rv:10.0) Gecko/20100101 Firefox/10.0 Windows NT, Win64 on x64 Mozilla/5.0 (Windows NT x. Y; Win64; x64; rv:10.0) Gecko/20100101 Firefox/10.0 Windows NT, WOW64 Mozilla/5.0 (Windows NT x. Y; WOW64; rv:10.0) Gecko/20100101 Firefox/10.0 Macintosh Here, x.y is the version of Mac OS X (for instance, Mac OS X 10.6). Mac OS X version Gecko user agent string Mac OS X on Intel x86 or x8664 Mozilla/5.0 (Macintosh; Intel Mac OS X x.y; rv:10.0) Gecko/20100101 Firefox/10.0 Mac OS X on PowerPC Mozilla/5.0 (Macintosh; PPC Mac OS X x.y; rv:10.0) Gecko/20100101 Firefox/10.0 Linux Linux is a more diverse platform.

A few common examples are given below. It's easy to find the correspondences by looking at the: repositories starting by mozilla-b2g are the release repositories for Firefox OS, and have both Firefox OS and Gecko versions in their names. Firefox OS has a four-digit version number: X.X.X.Y. The first two digits are owned by the Mozilla product team and denote versions with new features (eg: v1.1, 1.2, etc). The third digit is incremented with regular version tags (about every 6 weeks) for security updates, and the fourth is owned by the OEM. Firefox for iOS Firefox for iOS uses the default Mobile Safari UA string, with an additional FxiOS/ token, similar to how. Form factor Firefox for iOS user agent string iPod Mozilla/5.0 (iPod touch; CPU iPhone OS 83 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) FxiOS/1.0 Mobile/12F69 Safari/600.1.4 iPhone Mozilla/5.0 (iPhone; CPU iPhone OS 83 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) FxiOS/1.0 Mobile/12F69 Safari/600.1.4 iPad Mozilla/5.0 (iPad; CPU iPhone OS 83 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) FxiOS/1.0 Mobile/12F69 Safari/600.1.4 Firefox Web Runtime The Web Runtime uses the same user agent string as desktop Firefox.

Other Gecko-based browsers These are some sample UA strings from other Gecko-based browsers on various platforms. Note that many of these have not yet been released on Gecko 2.0!