[comp.sys.atari.st] Emacs, microEMACS, microGnuEMACS

ljdickey@water.UUCP (10/20/87)

I have been experimenting with three different versions of EMACS
on my ST,  
one is called simply EMACS.PRG, one is called MG, and the third is
called microEMACS and comes as a part of the Gulam shell.

So far, I feel that I have not progressed very far on the learning curve.
because I can not make any of them do much more than some primitive
word processors.

(I have used and written about two powerful programmable editors, and
am looking for some of the same capabilities.)

I have a few questions that maybe someone can help me with, please :-) .
I know that I am revealing my ignorance here, but that is exactly
what it is, ignorance.

	How can I read a file into an existing buffer?
		(This is what VI users do by typing
		the command ".r file".)

	How do I change in lines with "exp1", all instance of "exp2"
		to "text3".  (This is what VI users by typing
		the command   "1,$ g/exp1/ s/exp2/text3/". )

	How do I define a macro when starting the editor?

	Can I define a macros from a text file after the editor
		is running?

Thanks!

-- 
 L. J. Dickey, Faculty of Mathematics, University of Waterloo. 
 ljdickey@watmath.UUCP		UUCP: ...!uunet!watmath!ljdickey
 ljdickey%water@waterloo.edu	ljdickey@watdcs.BITNET		
 ljdickey%water%waterloo.csnet@csnet-relay.ARPA

nwd@j.cc.purdue.edu (Daniel Lawrence) (10/21/87)

In article <1180@water.waterloo.edu> ljdickey@water.waterloo.edu (Lee Dickey) writes:
>I have been experimenting with three different versions of EMACS
>on my ST,  
>one is called simply EMACS.PRG, one is called MG, and the third is
>called microEMACS and comes as a part of the Gulam shell.
>

MG is Micro GNU Emacs, ie it is an emacs which is very compatable with
GNU Emacs on many UNIX mainframes.

EMACS.PRG is actually MicroEMACS 3.x (7 or 8 or 9) and is an extensive
emacs with a macro language and a lot of features.

All three of the above EMACS were originally derived from Dave Conroy's
microEMACS (which is essentially what is inside GULAM) written in
1984/1985.

>So far, I feel that I have not progressed very far on the learning curve.
>because I can not make any of them do much more than some primitive
>word processors.
>
>(I have used and written about two powerful programmable editors, and
>am looking for some of the same capabilities.)
>

Since I have been programming MicroEMACS 3.x for a couple of years, I
can only answer your questions for that one.

>I have a few questions that maybe someone can help me with, please :-) .
>I know that I am revealing my ignorance here, but that is exactly
>what it is, ignorance.
>
>	How can I read a file into an existing buffer?
>		(This is what VI users do by typing
>		the command ".r file".)
>

^X ^I	(insert-file)	inserts a disk file into the current buffer
			at the location of the cursor.

^X ^R	(read-file)	reads a file into a buffer replacing its
			original contents

^X ^F	(find-file)	finds a file already in a buffer and switches to
			it, or creates a new buffer and reads the file in.

>	How do I change in lines with "exp1", all instance of "exp2"
>		to "text3".  (This is what VI users by typing
>		the command   "1,$ g/exp1/ s/exp2/text3/". )
>
This one is difficult.....

30 store-macro
	set %savebuf $cbufname
	set %exp1 @"Selection string: "
	set %exp2 @"Search string: "
	set %text3 @"Replacement String: "
*nexts
	search-forward %exp1	;when this fails, the macro aborts...
	beginning-of-line
	1 kill-to-end-of-line	;grab the line
	select-buffer "[temp]"	;stash it...
	yank
	beginning-of-file	;do the replacement (ignoring a failure)
	!force replace-string %exp2 %text3
	beginning-of-file	;grab it again
	1 kill-to-end-of-line
	select-buffer %savebuf	;and put it back
	yank			;we are now positioned at the next line
	!goto nexts
!endm

bind-to-key execute-macro-30 M-S	;bind this to Meta-S (too pick one)

	now the META-S keystroke will do what you ask from the current
cursor in the current buffer to the end of that buffer.

>	How do I define a macro when starting the editor?
>

Place it in your emacs.rc file  (or .emacsrc on UNIX or the AMIGA)

>	Can I define a macros from a text file after the editor
>		is running?
>

Yes, the execute-file command executes a file of macros

A close look at the emacs.mss file that comes in the standard
distribution package should answer most of your questions.

>Thanks!
>
>-- 
> L. J. Dickey, Faculty of Mathematics, University of Waterloo. 
> ljdickey@watmath.UUCP		UUCP: ...!uunet!watmath!ljdickey
> ljdickey%water@waterloo.edu	ljdickey@watdcs.BITNET		
> ljdickey%water%waterloo.csnet@csnet-relay.ARPA

			Daniel Lawrence		(317) 742-5153
			UUCP:	{ihnp4!pur-ee!}j.cc.purdue.edu!nwd
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