.TH IDIFF 1
.SH NAME
idiff \- interactive file comparison
.SH SYNOPSIS
.B idiff
file1 file2
.SH DESCRIPTION
.I idiff
compares
.I file1
with
.I file2
using
.IR diff ,
then presents each set of changed lines
for selection or processing.
.I file2
may be a directory;
in that case, the basename of
.I file1
is appended.
.PP
For each group, legal responses are
.TP
<
to retain the `from' lines
.TP
>
to retain the `to' lines
.TP
e
to edit both sets of lines
.TP
d
to delete both sets
.TP
1
to retain the rest of the `from' file
.TP
2
to retain the rest of the `to' file
.TP
!
to invoke a shell command
.PP
Lines common to each file are copied verbatim.
Lines produced by this process,
including the lines written from within the editor,
are written to file
.IR idiff.out .
.SH FILES
idiff.out
.br
idiff.*
.br
/tmp/idiff.*
.SH SEE ALSO
diff(1), diff3(1)
.SH BUGS
There is no way to revisit a choice.