mirror of
https://github.com/git/git.git
synced 2024-11-25 19:04:18 +08:00
36617af7ed
The goal of the patch is to introduce the GNU diff
-B/--ignore-blank-lines as closely as possible. The short option is not
available because it's already used for "break-rewrites".
When this option is used, git-diff will not create hunks that simply
add or remove empty lines, but will still show empty lines
addition/suppression if they are close enough to "valuable" changes.
There are two differences between this option and GNU diff -B option:
- GNU diff doesn't have "--inter-hunk-context", so this must be handled
- The following sequence looks like a bug (context is displayed twice):
$ seq 5 >file1
$ cat <<EOF >file2
change
1
2
3
4
5
change
EOF
$ diff -u -B file1 file2
--- file1 2013-06-08 22:13:04.471517834 +0200
+++ file2 2013-06-08 22:13:23.275517855 +0200
@@ -1,5 +1,7 @@
+change
1
2
+
3
4
5
@@ -3,3 +5,4 @@
3
4
5
+change
So here is a more thorough description of the option:
- real changes are interesting
- blank lines that are close enough (less than context size) to
interesting changes are considered interesting (recursive definition)
- "context" lines are used around each hunk of interesting changes
- If two hunks are separated by less than "inter-hunk-context", they
will be merged into one.
The implementation does the "interesting changes selection" in a single
pass.
Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/*
|
|
* LibXDiff by Davide Libenzi ( File Differential Library )
|
|
* Copyright (C) 2003 Davide Libenzi
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* Davide Libenzi <davidel@xmailserver.org>
|
|
*
|
|
*/
|
|
|
|
#if !defined(XDIFFI_H)
|
|
#define XDIFFI_H
|
|
|
|
|
|
typedef struct s_diffdata {
|
|
long nrec;
|
|
unsigned long const *ha;
|
|
long *rindex;
|
|
char *rchg;
|
|
} diffdata_t;
|
|
|
|
typedef struct s_xdalgoenv {
|
|
long mxcost;
|
|
long snake_cnt;
|
|
long heur_min;
|
|
} xdalgoenv_t;
|
|
|
|
typedef struct s_xdchange {
|
|
struct s_xdchange *next;
|
|
long i1, i2;
|
|
long chg1, chg2;
|
|
int ignore;
|
|
} xdchange_t;
|
|
|
|
|
|
|
|
int xdl_recs_cmp(diffdata_t *dd1, long off1, long lim1,
|
|
diffdata_t *dd2, long off2, long lim2,
|
|
long *kvdf, long *kvdb, int need_min, xdalgoenv_t *xenv);
|
|
int xdl_do_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
|
|
xdfenv_t *xe);
|
|
int xdl_change_compact(xdfile_t *xdf, xdfile_t *xdfo, long flags);
|
|
int xdl_build_script(xdfenv_t *xe, xdchange_t **xscr);
|
|
void xdl_free_script(xdchange_t *xscr);
|
|
int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
|
|
xdemitconf_t const *xecfg);
|
|
int xdl_do_patience_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
|
|
xdfenv_t *env);
|
|
int xdl_do_histogram_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
|
|
xdfenv_t *env);
|
|
|
|
#endif /* #if !defined(XDIFFI_H) */
|