view tests/test-convert-cvs-detectmerge.out @ 11297:d320e70442a5

replace Python standard textwrap by MBCS sensitive one for i18n text

Mercurial has problem around text wrapping/filling in MBCS encoding
environment, because standard 'textwrap' module of Python can not
treat it correctly. It splits byte sequence for one character into two
lines.

According to unicode specification, "east asian width" classifies
characters into:

   W(ide), N(arrow), F(ull-width), H(alf-width), A(mbiguous)


W/N/F/H can be always recognized as 2/1/2/1 bytes in byte sequence,
but 'A' can not. Size of 'A' depends on language in which it is used.

Unicode specification says:

   If the context(= language) cannot be established reliably they
   should be treated as narrow characters by default

but many of class 'A' characters are full-width, at least, in Japanese
environment.

So, this patch treats class 'A' characters as full-width always for
safety wrapping.

This patch focuses only on MBCS safe-ness, not on writing/printing
rule strict wrapping for each languages

MBCS sensitive textwrap class is originally implemented
by ITO Nobuaki <[e-mail]>.

% create cvs repository with one project
cvs -f -q -d *REPO* init
% populate cvs repository
cvs -f -Q co proj
cvs -f -Q add file1
cvs -f ci -madd file1 on trunk
% create two release branches
cvs -f -q tag -b v1_0
T file1
cvs -f -q tag -b v1_1
T file1
% modify file1 on branch v1_0
cvs -f -Q update -rv1_0
cvs -f ci -madd text
% make unrelated change on v1_1
cvs -f -Q update -rv1_1
cvs -f -Q add unrelated
cvs -f ci -munrelated change
% merge file1 to v1_1
cvs -f -Q update -jv1_0
RCS file: *REPO*/proj/file1,v
retrieving revision 1.1
retrieving revision 1.1.2.1
Merging differences between 1.1 and 1.1.2.1 into file1
cvs -f ci -madd text [MERGE from v1_0]
% merge change to trunk
cvs -f -Q update -A
cvs -f -Q update -jv1_1
RCS file: *REPO*/proj/file1,v
retrieving revision 1.1
retrieving revision 1.1.4.1
Merging differences between 1.1 and 1.1.4.1 into file1
cvs -f ci -madd text [MERGE from v1_1]
% non-merged change on trunk
cvs -f -Q add file2
cvs -f ci -madd file2 on trunk file2
% change on trunk to backport
cvs -f ci -madd other text file1
revision 1.3
add other text
----------------------------
revision 1.2
add text [MERGE from v1_1]
----------------------------
revision 1.1
branches:  1.1.2;  1.1.4;
add file1 on trunk
----------------------------
revision 1.1.4.1
add text [MERGE from v1_0]
----------------------------
revision 1.1.2.1
add text
=============================================================================
% backport trunk change to v1_1
cvs -f -Q update -rv1_1
cvs -f -Q update -j1.2 -j1.3 file1
RCS file: *REPO*/proj/file1,v
retrieving revision 1.2
retrieving revision 1.3
Merging differences between 1.2 and 1.3 into file1
cvs -f ci -madd other text [MERGE from HEAD] file1
% fix bug on v1_1, merge to trunk with error
cvs -f -Q update -rv1_1
cvs -f -Q tag unmerged
cvs -f ci -mfix file1
cvs -f -Q update -A
cvs -f -Q update -junmerged -jv1_1
RCS file: *REPO*/proj/file1,v
retrieving revision 1.1.4.2
retrieving revision 1.1.4.3
Merging differences between 1.1.4.2 and 1.1.4.3 into file1
cvs -f ci -mfix file1 [MERGE from v1-1]
% convert to hg
warning: CVS commit message references non-existent branch 'v1-1':
fix file1 [MERGE from v1-1]
initializing destination proj.hg repository
connecting to *REPO*
scanning source...
collecting CVS rlog
12 log entries
creating changesets
10 changeset entries
sorting...
converting...
9 add file1 on trunk
8 add text
7 unrelated change
6 add text [MERGE from v1_0]
5 add text [MERGE from v1_1]
4 add file2 on trunk
3 add other text
2 add other text [MERGE from HEAD]
1 fix file1
0 fix file1 [MERGE from v1-1]
% complete log
9: '' fix file1 [MERGE from v1-1]
8: 'v1_1' fix file1
7: 'v1_1' add other text [MERGE from HEAD]
6: '' add other text
5: '' add file2 on trunk
4: '' add text [MERGE from v1_1]
3: 'v1_1' add text [MERGE from v1_0]
2: 'v1_1' unrelated change
1: 'v1_0' add text
0: '' add file1 on trunk
% graphical log
o  9: '' fix file1 [MERGE from v1-1]
|
| o  8: 'v1_1' fix file1
| |
| o  7: 'v1_1' add other text [MERGE from HEAD]
|/|
o |  6: '' add other text
| |
o |  5: '' add file2 on trunk
| |
o |  4: '' add text [MERGE from v1_1]
|\|
| o    3: 'v1_1' add text [MERGE from v1_0]
| |\
+---o  2: 'v1_1' unrelated change
| |
| o  1: 'v1_0' add text
|/
o  0: '' add file1 on trunk