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Fixed non-conflict errors that occur when changes made to the local files are

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the same as the changes made in the repository.  This is often seen by
people with remote CVS trees that have applied their local patches to the
master site.  a 'cvs update' will show bogus conflicts.

Obtained from: CVS mailing list, Stig<stig@inse.com>

In diffutils 2.6 and 2.7, diff3 -A complains about identical overlapping
changes.  They're different from the ancestor but not from each other...
Why bother?  The patch below fixes this nonsense and preserves [B]ackwards
compatiblity with the -B flag (also --show-bogus-conflicts).

    Party on...
    Stig
This commit is contained in:
Nate Williams 1995-02-20 18:47:18 +00:00
parent 56b688ea1c
commit f8972f58e8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=6575
2 changed files with 18 additions and 8 deletions
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23
gnu/usr.bin/diff/diff3.c
View File

@ -163,7 +163,9 @@ static int simple_only;
/* If nonzero, do not output information for non-overlapping diffs. */
static int overlap_only;
/* If nonzero, show information for DIFF_2ND diffs. */
/* If nonzero, show information for 3_way and DIFF_2ND diffs.
1= show 2nd only when 1st and 3rd differ
2= show 2nd when DIFF_2ND (1 and 3 have same change relative to 2) */
static int show_2nd;
/* If nonzero, include `:wq' at the end of the script
@ -204,6 +206,7 @@ static struct option const longopts[] =
{
{"text", 0, 0, 'a'},
{"show-all", 0, 0, 'A'},
{"show-bogus-conflicts", 0, 0, 'B'},
{"ed", 0, 0, 'e'},
{"show-overlap", 0, 0, 'E'},
{"label", 1, 0, 'L'},
@ -242,15 +245,18 @@ main (argc, argv)
argv0 = argv[0];
while ((c = getopt_long (argc, argv, "aeimvx3AEL:TX", longopts, 0)) != EOF)
while ((c = getopt_long (argc, argv, "aeimvx3ABEL:TX", longopts, 0)) != EOF)
{
switch (c)
{
case 'a':
always_text = 1;
break;
case 'B':
++show_2nd;
/* Falls through */
case 'A':
show_2nd = 1;
++show_2nd;
flagging = 1;
incompat++;
break;
@ -401,11 +407,12 @@ usage (status)
printf ("\
Usage: %s [options] my-file older-file your-file\n\
Options:\n\
[-exAEX3aTv] [-i|-m] [-L label1 [-L label2 [-L label3]]]\n\
[-exABEX3aTv] [-i|-m] [-L label1 [-L label2 [-L label3]]]\n\
[--easy-only] [--ed] [--help] [--initial-tab]\n\
[--label=label1 [--label=label2 [--label=label3]]] [--merge]\n\
[--overlap-only] [--show-all] [--show-overlap] [--text] [--version]\n\
Only one of [exAEX3] is allowed\n", argv0);
[--overlap-only] [--show-all] [ --show-bogus-conflicts ]\n\
[--show-overlap] [--text] [--version]\n\
Only one of [exABEX3] is allowed\n", argv0);
exit (status);
}
@ -1423,7 +1430,7 @@ output_diff3_edscript (outputfile, diff, mapping, rev_mapping,
switch (type)
{
default: continue;
case DIFF_2ND: if (!show_2nd) continue; conflict = 1; break;
case DIFF_2ND: if (show_2nd < 2) continue; conflict = 1; break;
case DIFF_3RD: if (overlap_only) continue; conflict = 0; break;
case DIFF_ALL: if (simple_only) continue; conflict = flagging; break;
}
@ -1552,7 +1559,7 @@ output_diff3_merge (infile, outputfile, diff, mapping, rev_mapping,
switch (type)
{
default: continue;
case DIFF_2ND: if (!show_2nd) continue; conflict = 1; break;
case DIFF_2ND: if (show_2nd < 2) continue; conflict = 1; break;
case DIFF_3RD: if (overlap_only) continue; conflict = 0; break;
case DIFF_ALL: if (simple_only) continue; conflict = flagging;
format_2nd = "||||||| %s\n";

3
gnu/usr.bin/diff3/diff3.1
View File

@ -39,6 +39,9 @@ into
.IR mine ,
surrounding all conflicts with bracket lines.
.TP
.B \-B
Old behavior of -A. Shows non-conflicts.
.TP
.B \-e
Generate an
.I ed