path: root/2020/subtitles/emacsconf-2020--38-emacs-development-update--john-wiegley-autogen.sbv

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hello emacs conf this is john wigley i'm

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one of the co-maintainers of emacs along

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with ellie zoretsky

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and lars ingebrigston and i wanted to

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give you

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a technical update on what has been

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happening

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with the emacs in the last year so

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specifically uh we have a few notes that

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i've gotten from

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a call with ellie he's been in charge of

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directing most of the

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technical contributions on the mailing

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list and monitoring all the patches

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so i'm more here just as a messenger

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he says that we have good progress and

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support for cairo

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this is going to be enabled by default

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and emax 28

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and cairo plus half buzz is going to be

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the preferred rendering combination

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so cairo support is not new but in the

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past there were a lot of bugs in the

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code and so it was made experimental

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so most of those bugs have been fixed

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recently and now it becomes the default

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and the next major version

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which will enable several good features

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such as color emojis if you're looking

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forward to those

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xft as a result is deprecated there are

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bugs not getting fixed in that code it

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doesn't appear to be very well

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maintained

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it was the most advanced font mac end

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and emax before cairo became dependable

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so now that we have a more a better

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maintained and available solution in

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cairo we're going to go from that

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go from xft to that native compilation

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in lisp

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will also be landing soon it's currently

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on a branch but there are several people

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using it

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they say they're very impressed it does

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require live gcc

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jit to be installed for it to work and

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this means you have to have gcc 10

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installed

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execution of emacs lisp with native

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compilation on

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is about 2.5 times faster than the

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bytecode

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interpreter we don't yet have any

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measurements on

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memory or how it affects resources

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besides cpu so

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we do look forward to having more

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numbers and analysis to see what the

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real impact of that is going to be

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also it may vary in compute advantage

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based on the type of workload that

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you're performing

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a downside to the native compilation at

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the moment is that it takes a long

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time to compile even when you're doing a

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16 core build of emacs

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it can still take 15 minutes to compile

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emacs

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and all of its in all of its lisp code

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with this enabled

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also this is going to have to happen on

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every user's machine

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because we cannot distribute the native

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compilation products they are specific

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to the compo

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to the processor that you might be

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running on so

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the emax distribution will remain much

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as it is now but if you want to have the

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benefits of natively compiled

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core lisp files you're going to have to

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spend that time and have gcc 10

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available

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to get that compilation support um

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the gtk only build is being prepared

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for merging so what this does is it

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throws away

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most of the other tool kits that emacs

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was using

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and relies only on gtk making emacs

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much more of a gtk application than it

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has been

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the main issue here is that we were

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abusing gtk in some ways that weren't

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really meant

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and now we're going to be more of a

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first club gtk will be more of a first

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class citizen in the

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approach and the ways that we use it and

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and

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be using it in the ways that the gtk

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developers intended

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there is going to be much more support

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for xt mouse

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so xt mouse allows you to use your mouse

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inside of a terminal window

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which you could do before but there were

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certain aspects such as menus

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that weren't supported so instead of

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having kind of partial support for mouse

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inside of an x term with xt

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mouse you get full support this is going

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to allow

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changes in the way that things can be

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bound the ways that

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uh key bindings can the mouse events can

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be mapped to key bindings while in

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x terms and um yeah little by little

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this support is being extended even

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further

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so we look forward to seeing that

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develop in the near term

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once this is merged by the way also then

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emacs will have mouse support in every

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one of its available configurations

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which has not been true until now emacs

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27 will be soon releasing

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27.2 and the pretest for that should

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begin sometime soon after emacs comp is

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done

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and finally emacs 28 is going to get

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better emoji support

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right now emojis are registered

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internally within emacs as symbols

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which works in some ways but does not

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support some of the special features

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of of emojis such as different

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skin tones for the hand emoji or face

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emojis

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in emacs 28 emojis are going to have

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their own support within the sequel

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c code and then this is going to allow

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those types of variations and other

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emoji specific font setups so that is

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everything for emacs

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in the future i don't have a timeline

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for you on when 28 will be available

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but 27 is going to keep improving until

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we're ready to get there

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so have fun with the rest of you max

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conf and i hope to see you there

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bye