destutil: choose non-closed branch head at first (BC)
Before this patch, destupdate() returns the tipmost (descendant)
branch head regardless of closed or not. But updating to closed branch
head isn't reasonable for ordinary workflow, because:
- "hg heads" doesn't show closed heads (= updated parent itself) by
default
- subsequent committing on it re-opens closed branch
even if inactivation of closed head is needed, update destination
isn't it, because it should be merged into to another branch in
such case.
This patch chooses non-closed descendant branch head as default update
destination at first. If all descendant branch heads are closed,
destupdate() returns the tipmost closed branch head.
For simplicity, this patch chooses adding _destupdatebranchfallback()
instead largely changing _destupdatebranch().
This patch changes not only normal lookup code path, but also the "no
default branch" code path, for consistency.
/*
* A command server client that uses Unix domain socket
*
* Copyright (c) 2011 Yuya Nishihara <yuya@tcha.org>
*
* This software may be used and distributed according to the terms of the
* GNU General Public License version 2 or any later version.
*/
#ifndef HGCLIENT_H_
#define HGCLIENT_H_
#include <sys/types.h>
struct hgclient_tag_;
typedef struct hgclient_tag_ hgclient_t;
hgclient_t *hgc_open(const char *sockname);
void hgc_close(hgclient_t *hgc);
pid_t hgc_peerpid(const hgclient_t *hgc);
const char **hgc_validate(hgclient_t *hgc, const char *const args[],
size_t argsize);
int hgc_runcommand(hgclient_t *hgc, const char *const args[], size_t argsize);
void hgc_attachio(hgclient_t *hgc);
const char *hgc_getpager(hgclient_t *hgc, const char *const args[],
size_t argsize);
void hgc_setenv(hgclient_t *hgc, const char *const envp[]);
#endif /* HGCLIENT_H_ */