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Here is my zsh code

function eweb() {
    emacsclient -t --eval "(eww-open-file \"$1\")" "(save-buffer \"$2\")"
}

There are two parameters, the first is the local webpage filename, for example, ./1.html. The second parameter is the filename I want to save the text to. For example, 1.org. This code can open the webage successfully, but it cannot pass the second parameter to save-buffer.

What's more, it cannot finish the procedure silently, which means it cannot be used to batch convert HTML to text.

How can I solve these two problems?

  • Put everything inside a (progn ...) form, then escape intermediate quotation marks. – InHarmsWay May 24 '18 at 11:40
  • Thank you @InHarmsWay .I did what you say, eweb () { emacsclient -t --eval (progn \"(eww-open-file \"$1\")\" \"(save-buffer \"$2\")\") } , but it shows error. – ytyyutianyun May 24 '18 at 12:51
  • What is the error? And you shouldn’t escape the opening and closing quotation marks. I’ll add an answer – InHarmsWay May 24 '18 at 13:28
  • Untested, but try this: emacsclient -t —eval \”(progn (eww-open-file \\\”$1\\\”)(save-buffer \\\”$2\\\”))\” – InHarmsWay May 24 '18 at 13:34
  • That quoting was for .gitconfig. In a shell script you can also experiment with —eval “(progn (eww-open-file \”$1\”)(save-buffer \”$2\”))” – InHarmsWay May 24 '18 at 13:48
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To pass multiple expressions to emacsclient (and emacs as well), you have two options.

The first option is grouping them into one expression with progn:

function eweb() { 
    emacsclient -e "(progn (eww-open-file \"$1\") (write-region nil nil \"$2\"))"
}

The second option is using multiple -e/--eval:

function eweb() {
    emacsclient -e "(eww-open-file \"$1\")" -e "(write-region nil nil \"$2\")"
}

By default, emacsclient prints the value of each expression, for example,

$ emacsclient -e 1 -e 2 -e 3
1
2
3
$

Since Emacs 26.1, you can the -u/--suppress-output option to disable the behaviour

-u, --suppress-output Don't display return values from the server

With the option, emacsclient will print nothing.

$ emacsclient -u -e 1 -e 2 -e 3
$
  • 1
    Emacsclient can accept an arbitrary number of s-expressions to evaluate after the --eval option. It is Emacs which only accepts a single expression per --eval option. – Basil Aug 27 '18 at 18:14
  • @Basil Oh, you're right. I didn't know that. I think the real issue is that OP (@yuxuan) misused save-buffer. – xuchunyang Aug 27 '18 at 19:53
  • Yes, when they were most likely after write-file/write-region. – Basil Aug 27 '18 at 20:11

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