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

[Grant Rettke]

I think that it all comes down to this:

- emacsclient eval returns the results of expr quoted

- server-eval-at returns the results of expr unquoted.

Seemingly the former uses print or prin1 and the latter uses princ.

The whole reason for this helper script is that I don't want the results of
eval auto-quoted, and I don't want to have to remove them myself.

I updated it all here:

https://github.com/grettke/be2#about

On Sat, Apr 3, 2021 at 12:16 AM Grant Rettke <grant at wisdomandwonder.com>
wrote:

> Oh this is why:
>
>
> https://emacs.stackexchange.com/questions/9391/why-is-emacsclient-inserting-quotes-around-output-strings
>
> On Sat, Apr 3, 2021 at 12:14 AM Grant Rettke <grant at wisdomandwonder.com>
> wrote:
>
>> 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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