view tests/test-mq-qimport.out @ 10189:e451e599fbcf

patch: support diff data loss detection and upgrade

In worst case, generating diff in upgrade mode can be two times more expensive
than generating it in git mode directly: we may have to regenerate the whole
diff again whenever a git feature is detected. Also, the first diff attempt is
completely buffered instead of being streamed. That said, even without having
profiled it yet, I am convinced we can fast-path the upgrade mode if necessary
were it to be used in regular diff commands, and not only in mq where avoiding
data loss is worth the price.

% qimport non-existing-file
abort: unable to read non-existing-file
% import email
adding email to series file
applying email
now at: email
% hg tip -v
changeset:   0:1a706973a7d8
tag:         qtip
tag:         tip
tag:         email
tag:         qbase
user:        Username in patch <[e-mail]>
date:        Thu Jan 01 00:00:00 1970 +0000
files:       x
description:
First line of commit message.

More text in commit message.


popping email
patch queue now empty
% import URL
adding url.diff to series file
url.diff
% import patch that already exists
abort: patch "url.diff" already exists
applying url.diff
now at: url.diff
foo
popping url.diff
patch queue now empty
% qimport -f
adding url.diff to series file
applying url.diff
now at: url.diff
foo2
popping url.diff
patch queue now empty
% build diff with CRLF
adding b
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% qimport CRLF diff
adding b.diff to series file
applying b.diff
now at: b.diff
% try to import --push
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
adding another.diff to series file
applying another.diff
now at: another.diff
patch b.diff finalized without changeset message
patch another.diff finalized without changeset message