diff mercurial/cext/bdiff.c @ 36763:90f8fe72446c

xdiff: remove xemit related logic

xemit handles "diff formatting and output" with options like context lines,
whether show function names, etc. That is handled more cleanly at a higher
level in hg.

Removing context line parameters would also make the trimming logic (D2686)
cleaner and more confident. See [1].

[1]: https://github.com/git/git/commit/d2f82950a9226ae1102a7a97f03440a4bf8c6c09

Differential Revision: https://phab.mercurial-scm.org/D2705

--- a/mercurial/cext/bdiff.c	Sun Mar 04 00:17:49 2018 -0800
+++ b/mercurial/cext/bdiff.c	Tue Mar 06 18:41:08 2018 -0800
@@ -280,16 +280,11 @@
 	    XDF_INDENT_HEURISTIC, /* flags */
 	};
 	xdemitconf_t xecfg = {
-	    0,                  /* ctxlen */
-	    0,                  /* interhunkctxlen */
 	    XDL_EMIT_BDIFFHUNK, /* flags */
-	    NULL,               /* find_func */
-	    NULL,               /* find_func_priv */
 	    hunk_consumer,      /* hunk_consume_func */
 	};
 	xdemitcb_t ecb = {
 	    NULL, /* priv */
-	    NULL, /* outf */
 	};
 
 	if (!PyArg_ParseTuple(args, PY23("s#s#", "y#y#"), &a.ptr, &la, &b.ptr,