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WEBVTT
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hello and welcome to the stock
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the title of the stock is a tour feature
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a fast and fully featured terminal
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emulator
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inside new e-max so let's try to
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understand what we mean with the pass
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and fully featured
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and to do that we'll compare v term with
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the
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packages which are built in Emacs mean
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the term
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so let's let's jump into the v term so
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this is a feature buffer
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and this is a ansi term buffer what I'm
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going to do now is first I'm going to
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prove you
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what we move fast so to do that let me
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open a large file display on screen or
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large file this is about one megabyte of
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data
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and let me time that it takes about 0.6
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seconds
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with feature let's do the same with
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with ancient term well we already
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already see the difference
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so I will use this time to tell you
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what's different and
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what is v term exactly so v term is a
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terminal emulator built
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on top of an external library the
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library is called libvi term
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and is the same library used by newton
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for their own terminal emulator
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it's a c library and this is what gives
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us
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a lot of good features first the speed
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time spent here 0.6 is essentially the
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time that it takes to
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one convert the emax representation of
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like text
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into the visa and representation of what
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was a string and two into
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actually displaying that and that can
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take time
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if there's a if there's quantification
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involved so these are the 0.6 seconds
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there
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as we say in the in ancestor that's much
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much
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more time it's much slower so the
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terminal will feel much snappier much
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faster
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but that's not the main benefit or the
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only benefit of using this external
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library
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feature the second big benefit
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is that v term has support for all the
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escape codes
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that exterm has support for so v term is
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essentially as running x term
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inside an imax buffer so let's see that
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this for example
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let's start by looking at the support
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for colors
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we have support for all the colors out
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of the box we don't have to do anything
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and if we did the same here well we have
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only
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20 colors there's a way to get all the
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colors but it's much more involved
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but this is not where v term shines
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uh we can run all the commands that we
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want
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h top and cdu
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everything runs here also this title
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it's a
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it's a fairly complicated manipulation
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of
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the window and it will not work here
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it just doesn't work actually now the
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terminal is probably messed up
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yes so using this external library
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removes the burden from the developers
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of having to implement
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support for all these cape codes we just
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use those
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so in many ways running veteran
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is us running extern inside a max
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but it's better than that because since
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this is an e-max buffer
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we can enjoy a lot of features from
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Emacs
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as well as a tighter integration with
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e-max itself
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for example as you see here the title of
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my buffer
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is from the director I'm in so let's go
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to my tmp
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the title will change so there's
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information being exchanged between v
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term and index
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and of course the title is not the only
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place where information is exchanged
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I can find a file and I will be in the
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directory
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where my terminal is this feature is
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also available in nc term
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and it works also on b term and it
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follows me so if I go to tmp I'll get
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the tmp
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if I ssh to a remote server it will work
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also
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on remote servers as well which is a
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very nice way to edit files remotely
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while we're working on a shelf and
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second while vterm
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is not an e-lisp interpreter like
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initial what we can do is we can
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still run inbox functions so for example
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that requires some configuration the
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term
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command message I as you see there's a
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higher so what I'm doing
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is I'm executing the eagles function I
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and I can drop that
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and turn it around uh hash function to
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run
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a-list functions or another one file see
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we call this feature message passing and
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it requires
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some configuration on the emac side as
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well as in the shell side
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it's important to stress what's the
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nature of feature
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for instance every time I'm sending a
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key binding it's not immediately clear
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if my intention is to send it to the
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shell or to imax so v term implements
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some reasonable defaults
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but at the moment it's mainly packaged
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to display characters on a screen
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so for example if you're using evil the
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editing commands in evil will not work
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immediately there's some work to be done
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and integration can be improved on that
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side but
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sometimes we really want this to behave
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exactly like a imax buffer
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we want to be able to search if
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if I try to get it to search it will not
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work I will send it to the shop so to do
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that
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we enabled the term copy mode so as you
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see
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copy mode and now this buffer is
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essentially a fundamental buffer
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I can move around as I can search
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uh so it must have I
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can do everything I want and there are
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additional features for example I can
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jump around
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all the prompts and I find this
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extremely useful
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because I can copy update from my
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programs or
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what I always have to do is I have to
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google some errors so what I do is I
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select that
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and I have my keybinding in maksakov and
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I'm googling
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what I have to google so this is very
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nice and
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if I now that have selected something if
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I just press return I will
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go back to my normal editing mode with
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the
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text copied so I can paste it back so
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it's a quick way to
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interact with copy and interact with uh
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with the output of a buffer so finally
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let's discuss how to actually
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use beta let's circle back and let's go
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and let's look at the github repo
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where development is happening v term is
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available in velpa
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but since it's leveraging the power of
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an external module
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you must have Emacs compiled with
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support for modules
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and many distros like ubuntu debian
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that's not there so you have to get
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Emacs with support for modules compiling
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or
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getting images somewhere else and also
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the first time you are going to use this
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which
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works only on mac or
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new linux systems Emacs will try to find
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and compile this module
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so it's important this requirement is
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important if you're using windows
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well that's not it's not available and
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will not work
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so to conclude I want to just advertise
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this page
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if you have problems look at the issues
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and
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open unusual in case we'll try to help
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you we are very excited about feature
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and I think it's a transformative
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terminal experience inside glue imax
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