From: Jason Vas Dias <jason.vas.dias@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: how to invoke 'server-visit-files' function from emacsclient -e ?
Date: Wed, 12 Oct 2016 15:34:17 +0100 [thread overview]
Message-ID: <CALyZvKxMRQqGkyUMouuHhGqROethqWFNnNoA4No96HVDet3GFw@mail.gmail.com> (raw)
Good day -
I am trying to write a shell script that will accept a list of ( file
name, line number ) pairs
and get the user's running emacs process to visit each file, scroll to
the line number, and
wait for the user to press 'C-x+#' (invoke the 'server-edit' function)
before allowing
the next file to be visited .
Since emacsclient does most of this (except scrolling to the line number,
a very important feature for this application) , I am attempting to
use its '-e'
option to get it to request the running emacs to invoke the 'server-visit-files'
function , which happily accepts a (line #, column#) pair to move the cursor to.
I can get it to do most of this, but am having no luck convincing emacs that
the server-visit-files function's second PROC argument is a process -
just passing the
process ID does not work:
$ ( set -x; # must use exec here so emaclient's pid is $BASHPID
exec emacsclient -e \
'(server-visit-files (assoc "'${PWD}'/a_file" '"'"'(124 0))
['"$BASHPID"' ] )'
)
+ exec emacsclient -e '(server-visit-files (assoc "/tmp/a_file"
'\''(124 0)) [ 21027 ] )'
*ERROR*: Wrong type argument: processp, [21027]
(same thing happens if the PROC argument is not a vector, or if quoted).
There seems to be no way of specifying an external process , not run by emacs,
as being a LISP object for which the 'processp' "C" function will
return 't' - is this
the case ?
There also seems to be no way of getting emacsclient to load a file in
the users
running emacs and scroll to a given line number:
$ emacsclient /tmp/a_file -e '(goto-line 124)'
*ERROR*: Symbol's value as variable is void: /tmp/a_file
It seems the '-e' argument causes emacsclient to assume every argument
(including
arguments preceding the '-e') are lisp expressions.
Is there any way of constructing an emacs LISP 'PROC' object given an
arbitrary PID
of a process not initiated by emacs ?
Can anyone suggest a way of acheiving the desired result:
- loading one of many files into a running emacs , causing emacs to
scroll to a given line number
in that file, and then waiting for user to press 'C-x #' before
allowing the next file to be loaded ?
If not, please consider modifyinh emacsclient to accept a new 'line
number to scroll to' option.
Any responses gratefully received.
Thanks, Jason
next reply other threads:[~2016-10-12 14:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-12 14:34 Jason Vas Dias [this message]
2016-10-12 19:40 ` how to invoke 'server-visit-files' function from emacsclient -e ? Eli Zaretskii
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