Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!rice!brazos.rice.edu!jiang
From: jiang@bohr.rice.edu (Jun Jiang)
Newsgroups: gnu.emacs
Subject: List and edit lines containing certain strings ?
Message-ID: <JIANG.90Feb27134413@bohr.rice.edu>
Date: 27 Feb 90 19:44:13 GMT
Sender: root@rice.edu
Distribution: gnu
Organization: Chemistry Department, Rice University
Lines: 16


I am wondering how hard it will be to let gnu-emacs do the following:

1). Upon request, list all lines (and only these lines) which contain
a certain string in the current buffer.  For example, list those lines
containing ``real*8'' in a FORTRAN program.

2). Edit these lines in the new buffer.  For example, change some of
the ``real*8'' to ``real*4''.

3). When the changes are done, exit the new buffer and return to the
original one.  Of course, the changes should not be lost. 

The reason I ask for this is that I have used an editor which has this
feature.  It was really nice because you can clearly see the changes
you made to the file.