[emacs-berlin] `server-eval-at' turns out to be pretty useful...

[Grant Rettke]

For example

Using emacsclient
✔ gsmac:~/src/be2 [main|✚ 1]> ./be2 "(corporate-bs-generator-make)"
OK...
"completely scale customized catalysts for change"

Using server-eval-at
✔ gsmac:~/src/be2 [main|✚ 1]> ./be2 "(corporate-bs-generator-make)"
OK...
appropriately reconceptualize professional relationships

On Sat, Apr 3, 2021 at 12:08 AM Grant Rettke <grant at wisdomandwonder.com>
wrote:

> In the code I set up, instead of returning the value as it is displayed
> for a human to read, the output from `princ' to STDOUT is captured and
> returned as the value.
>
> This seems to be the one thing I can't figure how to do with emacsclient.
>
> The reason I need this is that in other programs I don't want to manage
> return values like "Hello world" should be two words instead of one word
> wrapped in double quotes.
>
>
>
> On Sat, Apr 3, 2021 at 12:03 AM Grant Rettke <grant at wisdomandwonder.com>
> wrote:
>
>> The one thing I really wanted is to get the result without double-quotes..
>>
>> I have to figure that out.
>>
>> On Fri, Apr 2, 2021 at 5:49 PM Grant Rettke <grant at wisdomandwonder.com>
>> wrote:
>>
>>> ---
>>> /Applications/Emacs.app/Contents/MacOS/bin/emacsclient
>>> --socket-name="/Users/gcr/server-sockets/emacs.sock" --eval 'emacs-version'
>>> OK...
>>>
>>> "26.3"
>>> ---
>>>
>>> Oh gosh.
>>>
>>> ---
>>> /usr/bin/emacsclient --version
>>> OK...
>>>
>>> emacsclient 22.1
>>> ---
>>>
>>> Lol.
>>>
>>> ---
>>> ✔ gsmac:~> ll /usr/local/bin/emacs
>>> OK...
>>>
>>> lrwxr-xr-x 1 gcr admin gcr 44 2019-11-22 21:24 "/usr/local/bin/emacs" ->
>>> "/Applications/Emacs.app/Contents/MacOS/Emacs"*
>>> ✔ gsmac:~> which emacsclient
>>> OK...
>>>
>>> /usr/bin/emacsclient
>>> ✔ gsmac:~> ll /usr/bin/emacsclient
>>> OK...
>>>
>>> -rwxr-xr-x 1 root wheel root 33k 2020-09-10 22:16 "/usr/bin/emacsclient"*
>>> ✔ gsmac:~>
>>> ---
>>>
>>> The problem: I forgot to link to the newer emacsclient.
>>>
>>> Thank you Til.
>>>
>>> On Fri, Apr 2, 2021 at 3:47 PM Grant Rettke <grant at wisdomandwonder.com>
>>> wrote:
>>>
>>>> Here is how it works for me:
>>>>
>>>> ✔ gsmac:~/src/be2 [main|✚ 2]> emacsclient
>>>> --socket-name="/Users/gcr/server-sockets/emacs.sock" --eval 'emacs-version'
>>>> OK...
>>>>
>>>> -emacs-pid 9230
>>>> -print "26.3"
>>>> ✔ gsmac:~/src/be2 [main|✚ 2]> emacs --batch --eval "(progn (require
>>>> 'server) (princ (server-eval-at \"/Users/gcr/server-sockets/emacs.sock\"
>>>> 'emacs-version)))"
>>>> OK...
>>>>
>>>> 26.3
>>>> ✔ gsmac:~/src/be2 [main|✚ 2]>
>>>>
>>>> I just want the value 26.3 not the -emacs-pid and -print stuff.
>>>>
>>>> I can't wait to try this on v27.
>>>>
>>>> On Fri, Apr 2, 2021 at 3:24 PM Grant Rettke <grant at wisdomandwonder.com>
>>>> wrote:
>>>>
>>>>> Forgot to share this is what it does on my machine:
>>>>>
>>>>> ---
>>>>> emacsclient --socket-name="/Users/gcr/server-sockets/emacs.sock"
>>>>> --eval "(+ 1 1)"
>>>>> OK...
>>>>>
>>>>> -emacs-pid 9230
>>>>> -print 2
>>>>> ---
>>>>> emacsclient --socket-name="/Users/gcr/server-sockets/emacs.sock"
>>>>> --eval "emacs-version"
>>>>> OK...
>>>>>
>>>>> -emacs-pid 9230
>>>>> -print "26.3"
>>>>> ---
>>>>> emacsclient --socket-name="/Users/gcr/server-sockets/emacs.sock"
>>>>> --eval '(with-current-buffer "*scratch*" (insert "Hello scratch buffer"))'
>>>>> OK...
>>>>>
>>>>> -emacs-pid 9230
>>>>> -print nil
>>>>> ---
>>>>>
>>>>> Want to bet that it is because I'm on Emacs 26?
>>>>>
>>>>> On Fri, Apr 2, 2021 at 2:37 PM Grant Rettke <grant at wisdomandwonder.com>
>>>>> wrote:
>>>>>
>>>>>> My computer is trying to drive insane. That is what is happening
>>>>>> here. And it is working.
>>>>>>
>>>>>> It has to be working wrong on my machine.
>>>>>>
>>>>>> Thanks for sharing that Til.
>>>>>>
>>>>>> On Fri, Apr 2, 2021 at 7:09 AM Tilmann Singer <tils at tils.net> wrote:
>>>>>>
>>>>>>> I might be missing something obvious, but what exactly is it that
>>>>>>> emacsclient can not do? With a running Emacs instance in which
>>>>>>> (server-start) has been called before, the following commands on a
>>>>>>> terminal with the bash shell work out of the box for me:
>>>>>>>
>>>>>>> $ emacsclient -e "(+ 1 1)"
>>>>>>> 2
>>>>>>>
>>>>>>> $ printf "How many is binary? $(emacsclient -e '(+ 1 1)')\n"
>>>>>>> How many is binary? 2
>>>>>>>
>>>>>>> $ emacsclient -e 'emacs-version'
>>>>>>> "27.2"
>>>>>>>
>>>>>>> $ emacsclient -e '(with-current-buffer "*scratch*" (insert "Hello
>>>>>>> scratch buffer"))'
>>>>>>> nil
>>>>>>> => Text was inserted into buffer *scratch*
>>>>>>>
>>>>>>>
>>>>>>> At least on this (arch) linux machine, the default server-socket-dir
>>>>>>> of
>>>>>>> "/run/user/1000/emacs" seems to be working fine.
>>>>>>>
>>>>>>>
>>>>>>> Til
>>>>>>>
>>>>>>
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