Bug 9740

Summary:	"xdelta delta" returns exit status 1 even when successful
Product:	Sisyphus	Reporter:	Sergey Vlasov <vsu>
Component:	xdelta1	Assignee:	Andrew Vasilyev <andy>
Status:	CLOSED NOTABUG	QA Contact:	qa-sisyphus
Severity:	normal
Priority:	P2	CC:	andy
Version:	unstable
Hardware:	all
OS:	Linux

Description Sergey Vlasov 2006-06-28 20:39:33 MSD

xdelta delta возвращает код завершения 1 даже при успешном выполнении операции.
Steps to Reproduce:
$ rpm -q xdelta1
xdelta1-1.1.3-alt4

$ dd if=/dev/zero of=file1 bs=4k count=1
$ dd if=/dev/zero of=file2 bs=8k count=1

$ xdelta delta file1 file2 file2.xdelta; echo $?
1

При этом file2.xdelta создаётся и успешно применяется к file1 командой xdelta patch.

Comment 1 Dmitry V. Levin 2007-02-15 19:48:03 MSK

xdelta(1) says that
"The delta command exits with status 0 to indicate that no differences were
found, with status 1 to indicate that some differences were found, and with
status 2 to indicate an error of some kind.

Comment 2 Sergey Vlasov 2007-02-15 20:06:51 MSK

Весьма неочевидное поведение, причём до версии 1.1.4 оно не было документировано.

Comment 3 Dmitry V. Levin 2007-02-15 20:40:08 MSK

Видимо по аналогии с кодом возврата diff'а.