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xdiff: drop XDL_EMIT_COMMON

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There are no more callers that use this mode, and none
likely to be added (as our xdl_merge() eliminates the common
use of it for generating 3-way merge bases).

This is effectively a revert of a9ed376 (xdiff: generate
"anti-diffs" aka what is common to two files, 2006-06-28),
though of course trying to revert that ancient commit
directly produces many textual conflicts.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2016-02-23 01:07:25 -05:00 committed by Junio C Hamano
parent b779b3a199
commit 907681e940
2 changed files with 0 additions and 19 deletions
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1
xdiff/xdiff.h
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@ -42,7 +42,6 @@ extern "C" {
#define XDF_IGNORE_BLANK_LINES (1 << 7)
#define XDL_EMIT_FUNCNAMES (1 << 0)
#define XDL_EMIT_COMMON (1 << 1)
#define XDL_EMIT_FUNCCONTEXT (1 << 2)
#define XDL_MMB_READONLY (1 << 0)

18
xdiff/xemit.c
View File

@ -120,21 +120,6 @@ static long def_ff(const char *rec, long len, char *buf, long sz, void *priv)
return -1;
}
static int xdl_emit_common(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
xdemitconf_t const *xecfg) {
xdfile_t *xdf = &xe->xdf2;
const char *rchg = xdf->rchg;
long ix;
for (ix = 0; ix < xdf->nrec; ix++) {
if (rchg[ix])
continue;
if (xdl_emit_record(xdf, ix, "", ecb))
return -1;
}
return 0;
}
struct func_line {
long len;
char buf[80];
@ -170,9 +155,6 @@ int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
long funclineprev = -1;
struct func_line func_line = { 0 };
if (xecfg->flags & XDL_EMIT_COMMON)
return xdl_emit_common(xe, xscr, ecb, xecfg);
for (xch = xscr; xch; xch = xche->next) {
xche = xdl_get_hunk(&xch, xecfg);
if (!xch)