tests: use inline Python instead of sed to add trailing whitespace

The sed invocation was failing on OS X and FreeBSD. I'm far too lazy
to diagnose that, so just use some inline Python to fix the build.

tests/test-diff-color.t

@@ -1,414 +1,416 b''
 Setup
 
   $ cat <<EOF >> $HGRCPATH
   > [ui]
   > color = yes
   > formatted = always
   > paginate = never
   > [color]
   > mode = ansi
   > EOF
   $ hg init repo
   $ cd repo
   $ cat > a <<EOF
   > c
   > c
   > a
   > a
   > b
   > a
   > a
   > c
   > c
   > EOF
   $ hg ci -Am adda
   adding a
   $ cat > a <<EOF
   > c
   > c
   > a
   > a
   > dd
   > a
   > a
   > c
   > c
   > EOF
 
 default context
 
   $ hg diff --nodates
   \x1b[0;1mdiff -r cf9f4ba66af2 a\x1b[0m (esc)
   \x1b[0;31;1m--- a/a\x1b[0m (esc)
   \x1b[0;32;1m+++ b/a\x1b[0m (esc)
   \x1b[0;35m@@ -2,7 +2,7 @@\x1b[0m (esc)
    c
    a
    a
   \x1b[0;31m-b\x1b[0m (esc)
   \x1b[0;32m+dd\x1b[0m (esc)
    a
    a
    c
 
 trailing whitespace
 
   $ cp a a.orig
-  $ sed 's/^dd$/dd \r/' a >a.new
-  $ mv a.new a
+  >>> with open('a', 'rb') as f:
+  ...     data = f.read()
+  >>> with open('a', 'wb') as f:
+  ...     f.write(data.replace('dd', 'dd \r'))
   $ hg diff --nodates
   \x1b[0;1mdiff -r cf9f4ba66af2 a\x1b[0m (esc)
   \x1b[0;31;1m--- a/a\x1b[0m (esc)
   \x1b[0;32;1m+++ b/a\x1b[0m (esc)
   \x1b[0;35m@@ -2,7 +2,7 @@\x1b[0m (esc)
    c
    a
    a
   \x1b[0;31m-b\x1b[0m (esc)
   \x1b[0;32m+dd\x1b[0m\x1b[0;1;41m \x1b[0m\r (esc)
    a
    a
    c
 
   $ mv a.orig a
 
 (check that 'ui.color=yes' match '--color=auto')
 
   $ hg diff --nodates --config ui.formatted=no
   diff -r cf9f4ba66af2 a
   --- a/a
   +++ b/a
   @@ -2,7 +2,7 @@
    c
    a
    a
   -b
   +dd
    a
    a
    c
 
 (check that 'ui.color=no' disable color)
 
   $ hg diff --nodates --config ui.formatted=yes --config ui.color=no
   diff -r cf9f4ba66af2 a
   --- a/a
   +++ b/a
   @@ -2,7 +2,7 @@
    c
    a
    a
   -b
   +dd
    a
    a
    c
 
 (check that 'ui.color=always' force color)
 
   $ hg diff --nodates --config ui.formatted=no --config ui.color=always
   \x1b[0;1mdiff -r cf9f4ba66af2 a\x1b[0m (esc)
   \x1b[0;31;1m--- a/a\x1b[0m (esc)
   \x1b[0;32;1m+++ b/a\x1b[0m (esc)
   \x1b[0;35m@@ -2,7 +2,7 @@\x1b[0m (esc)
    c
    a
    a
   \x1b[0;31m-b\x1b[0m (esc)
   \x1b[0;32m+dd\x1b[0m (esc)
    a
    a
    c
 
 --unified=2
 
   $ hg diff --nodates -U 2
   \x1b[0;1mdiff -r cf9f4ba66af2 a\x1b[0m (esc)
   \x1b[0;31;1m--- a/a\x1b[0m (esc)
   \x1b[0;32;1m+++ b/a\x1b[0m (esc)
   \x1b[0;35m@@ -3,5 +3,5 @@\x1b[0m (esc)
    a
    a
   \x1b[0;31m-b\x1b[0m (esc)
   \x1b[0;32m+dd\x1b[0m (esc)
    a
    a
 
 diffstat
 
   $ hg diff --stat
    a |  2 \x1b[0;32m+\x1b[0m\x1b[0;31m-\x1b[0m (esc)
    1 files changed, 1 insertions(+), 1 deletions(-)
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > record =
   > [ui]
   > interactive = true
   > [diff]
   > git = True
   > EOF
 
 #if execbit
 
 record
 
   $ chmod +x a
   $ hg record -m moda a <<EOF
   > y
   > y
   > EOF
   \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc)
   \x1b[0;36;1mold mode 100644\x1b[0m (esc)
   \x1b[0;36;1mnew mode 100755\x1b[0m (esc)
   1 hunks, 1 lines changed
   \x1b[0;33mexamine changes to 'a'? [Ynesfdaq?]\x1b[0m y (esc)
   
   \x1b[0;35m@@ -2,7 +2,7 @@ c\x1b[0m (esc)
    c
    a
    a
   \x1b[0;31m-b\x1b[0m (esc)
   \x1b[0;32m+dd\x1b[0m (esc)
    a
    a
    c
   \x1b[0;33mrecord this change to 'a'? [Ynesfdaq?]\x1b[0m y (esc)
   
 
   $ echo "[extensions]" >> $HGRCPATH
   $ echo "mq=" >> $HGRCPATH
   $ hg rollback
   repository tip rolled back to revision 0 (undo commit)
   working directory now based on revision 0
 
 qrecord
 
   $ hg qrecord -m moda patch <<EOF
   > y
   > y
   > EOF
   \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc)
   \x1b[0;36;1mold mode 100644\x1b[0m (esc)
   \x1b[0;36;1mnew mode 100755\x1b[0m (esc)
   1 hunks, 1 lines changed
   \x1b[0;33mexamine changes to 'a'? [Ynesfdaq?]\x1b[0m y (esc)
   
   \x1b[0;35m@@ -2,7 +2,7 @@ c\x1b[0m (esc)
    c
    a
    a
   \x1b[0;31m-b\x1b[0m (esc)
   \x1b[0;32m+dd\x1b[0m (esc)
    a
    a
    c
   \x1b[0;33mrecord this change to 'a'? [Ynesfdaq?]\x1b[0m y (esc)
   
 
   $ hg qpop -a
   popping patch
   patch queue now empty
 
 #endif
 
 issue3712: test colorization of subrepo diff
 
   $ hg init sub
   $ echo b > sub/b
   $ hg -R sub commit -Am 'create sub'
   adding b
   $ echo 'sub = sub' > .hgsub
   $ hg add .hgsub
   $ hg commit -m 'add subrepo sub'
   $ echo aa >> a
   $ echo bb >> sub/b
 
   $ hg diff -S
   \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc)
   \x1b[0;31;1m--- a/a\x1b[0m (esc)
   \x1b[0;32;1m+++ b/a\x1b[0m (esc)
   \x1b[0;35m@@ -7,3 +7,4 @@\x1b[0m (esc)
    a
    c
    c
   \x1b[0;32m+aa\x1b[0m (esc)
   \x1b[0;1mdiff --git a/sub/b b/sub/b\x1b[0m (esc)
   \x1b[0;31;1m--- a/sub/b\x1b[0m (esc)
   \x1b[0;32;1m+++ b/sub/b\x1b[0m (esc)
   \x1b[0;35m@@ -1,1 +1,2 @@\x1b[0m (esc)
    b
   \x1b[0;32m+bb\x1b[0m (esc)
 
 test tabs
 
   $ cat >> a <<EOF
   > 	one tab
   > 		two tabs
   > end tab	
   > mid	tab
   > 	all		tabs	
   > EOF
   $ hg diff --nodates
   \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc)
   \x1b[0;31;1m--- a/a\x1b[0m (esc)
   \x1b[0;32;1m+++ b/a\x1b[0m (esc)
   \x1b[0;35m@@ -7,3 +7,9 @@\x1b[0m (esc)
    a
    c
    c
   \x1b[0;32m+aa\x1b[0m (esc)
   \x1b[0;32m+\x1b[0m	\x1b[0;32mone tab\x1b[0m (esc)
   \x1b[0;32m+\x1b[0m		\x1b[0;32mtwo tabs\x1b[0m (esc)
   \x1b[0;32m+end tab\x1b[0m\x1b[0;1;41m	\x1b[0m (esc)
   \x1b[0;32m+mid\x1b[0m	\x1b[0;32mtab\x1b[0m (esc)
   \x1b[0;32m+\x1b[0m	\x1b[0;32mall\x1b[0m		\x1b[0;32mtabs\x1b[0m\x1b[0;1;41m	\x1b[0m (esc)
   $ echo "[color]" >> $HGRCPATH
   $ echo "diff.tab = bold magenta" >> $HGRCPATH
   $ hg diff --nodates
   \x1b[0;1mdiff --git a/a b/a\x1b[0m (esc)
   \x1b[0;31;1m--- a/a\x1b[0m (esc)
   \x1b[0;32;1m+++ b/a\x1b[0m (esc)
   \x1b[0;35m@@ -7,3 +7,9 @@\x1b[0m (esc)
    a
    c
    c
   \x1b[0;32m+aa\x1b[0m (esc)
   \x1b[0;32m+\x1b[0m\x1b[0;1;35m	\x1b[0m\x1b[0;32mone tab\x1b[0m (esc)
   \x1b[0;32m+\x1b[0m\x1b[0;1;35m		\x1b[0m\x1b[0;32mtwo tabs\x1b[0m (esc)
   \x1b[0;32m+end tab\x1b[0m\x1b[0;1;41m	\x1b[0m (esc)
   \x1b[0;32m+mid\x1b[0m\x1b[0;1;35m	\x1b[0m\x1b[0;32mtab\x1b[0m (esc)
   \x1b[0;32m+\x1b[0m\x1b[0;1;35m	\x1b[0m\x1b[0;32mall\x1b[0m\x1b[0;1;35m		\x1b[0m\x1b[0;32mtabs\x1b[0m\x1b[0;1;41m	\x1b[0m (esc)
 
   $ cd ..
 
 test inline color diff
 
   $ hg init inline
   $ cd inline
   $ cat > file1 << EOF
   > this is the first line
   > this is the second line
   >     third line starts with space
   > + starts with a plus sign
   > 	this one with one tab
   > 		now with full two tabs
   > 	now tabs		everywhere, much fun
   > 
   > this line won't change
   > 
   > two lines are going to
   > be changed into three!
   > 
   > three of those lines will
   > collapse onto one
   > (to see if it works)
   > EOF
   $ hg add file1
   $ hg ci -m 'commit'
 
   $ cat > file1 << EOF
   > that is the first paragraph
   >     this is the second line
   > third line starts with space
   > - starts with a minus sign
   > 	this one with two tab
   > 			now with full three tabs
   > 	now there are tabs		everywhere, much fun
   > 
   > this line won't change
   > 
   > two lines are going to
   > (entirely magically,
   >  assuming this works)
   > be changed into four!
   > 
   > three of those lines have
   > collapsed onto one
   > EOF
   $ hg diff --config diff.word-diff=False --color=debug
   [diff.diffline|diff --git a/file1 b/file1]
   [diff.file_a|--- a/file1]
   [diff.file_b|+++ b/file1]
   [diff.hunk|@@ -1,16 +1,17 @@]
   [diff.deleted|-this is the first line]
   [diff.deleted|-this is the second line]
   [diff.deleted|-    third line starts with space]
   [diff.deleted|-+ starts with a plus sign]
   [diff.deleted|-][diff.tab|	][diff.deleted|this one with one tab]
   [diff.deleted|-][diff.tab|		][diff.deleted|now with full two tabs]
   [diff.deleted|-][diff.tab|	][diff.deleted|now tabs][diff.tab|		][diff.deleted|everywhere, much fun]
   [diff.inserted|+that is the first paragraph]
   [diff.inserted|+    this is the second line]
   [diff.inserted|+third line starts with space]
   [diff.inserted|+- starts with a minus sign]
   [diff.inserted|+][diff.tab|	][diff.inserted|this one with two tab]
   [diff.inserted|+][diff.tab|			][diff.inserted|now with full three tabs]
   [diff.inserted|+][diff.tab|	][diff.inserted|now there are tabs][diff.tab|		][diff.inserted|everywhere, much fun]
    
    this line won't change
    
    two lines are going to
   [diff.deleted|-be changed into three!]
   [diff.inserted|+(entirely magically,]
   [diff.inserted|+ assuming this works)]
   [diff.inserted|+be changed into four!]
    
   [diff.deleted|-three of those lines will]
   [diff.deleted|-collapse onto one]
   [diff.deleted|-(to see if it works)]
   [diff.inserted|+three of those lines have]
   [diff.inserted|+collapsed onto one]
   $ hg diff --config diff.word-diff=True --color=debug
   [diff.diffline|diff --git a/file1 b/file1]
   [diff.file_a|--- a/file1]
   [diff.file_b|+++ b/file1]
   [diff.hunk|@@ -1,16 +1,17 @@]
   [diff.deleted|-][diff.deleted.changed|this][diff.deleted.unchanged| is the first ][diff.deleted.changed|line]
   [diff.deleted|-][diff.deleted.unchanged|this is the second line]
   [diff.deleted|-][diff.deleted.changed|    ][diff.deleted.unchanged|third line starts with space]
   [diff.deleted|-][diff.deleted.changed|+][diff.deleted.unchanged| starts with a ][diff.deleted.changed|plus][diff.deleted.unchanged| sign]
   [diff.deleted|-][diff.tab|	][diff.deleted.unchanged|this one with ][diff.deleted.changed|one][diff.deleted.unchanged| tab]
   [diff.deleted|-][diff.tab|		][diff.deleted.unchanged|now with full ][diff.deleted.changed|two][diff.deleted.unchanged| tabs]
   [diff.deleted|-][diff.tab|	][diff.deleted.unchanged|now ][diff.deleted.unchanged|tabs][diff.tab|		][diff.deleted.unchanged|everywhere, much fun]
   [diff.inserted|+][diff.inserted.changed|that][diff.inserted.unchanged| is the first ][diff.inserted.changed|paragraph]
   [diff.inserted|+][diff.inserted.changed|    ][diff.inserted.unchanged|this is the second line]
   [diff.inserted|+][diff.inserted.unchanged|third line starts with space]
   [diff.inserted|+][diff.inserted.changed|-][diff.inserted.unchanged| starts with a ][diff.inserted.changed|minus][diff.inserted.unchanged| sign]
   [diff.inserted|+][diff.tab|	][diff.inserted.unchanged|this one with ][diff.inserted.changed|two][diff.inserted.unchanged| tab]
   [diff.inserted|+][diff.tab|			][diff.inserted.unchanged|now with full ][diff.inserted.changed|three][diff.inserted.unchanged| tabs]
   [diff.inserted|+][diff.tab|	][diff.inserted.unchanged|now ][diff.inserted.changed|there are ][diff.inserted.unchanged|tabs][diff.tab|		][diff.inserted.unchanged|everywhere, much fun]
    
    this line won't change
    
    two lines are going to
   [diff.deleted|-][diff.deleted.unchanged|be changed into ][diff.deleted.changed|three][diff.deleted.unchanged|!]
   [diff.inserted|+][diff.inserted.changed|(entirely magically,]
   [diff.inserted|+][diff.inserted.changed| assuming this works)]
   [diff.inserted|+][diff.inserted.unchanged|be changed into ][diff.inserted.changed|four][diff.inserted.unchanged|!]
    
   [diff.deleted|-][diff.deleted.unchanged|three of those lines ][diff.deleted.changed|will]
   [diff.deleted|-][diff.deleted.changed|collapse][diff.deleted.unchanged| onto one]
   [diff.deleted|-][diff.deleted.changed|(to see if it works)]
   [diff.inserted|+][diff.inserted.unchanged|three of those lines ][diff.inserted.changed|have]
   [diff.inserted|+][diff.inserted.changed|collapsed][diff.inserted.unchanged| onto one]
 
 multibyte character shouldn't be broken up in word diff:
 
   $ $PYTHON <<'EOF'
   > with open("utf8", "wb") as f:
   >     f.write(b"blah \xe3\x82\xa2 blah\n")
   > EOF
   $ hg ci -Am 'add utf8 char' utf8
   $ $PYTHON <<'EOF'
   > with open("utf8", "wb") as f:
   >     f.write(b"blah \xe3\x82\xa4 blah\n")
   > EOF
   $ hg ci -m 'slightly change utf8 char' utf8
 
   $ hg diff --config diff.word-diff=True --color=debug -c.
   [diff.diffline|diff --git a/utf8 b/utf8]
   [diff.file_a|--- a/utf8]
   [diff.file_b|+++ b/utf8]
   [diff.hunk|@@ -1,1 +1,1 @@]
   [diff.deleted|-][diff.deleted.unchanged|blah ][diff.deleted.changed|\xe3\x82\xa2][diff.deleted.unchanged| blah] (esc)
   [diff.inserted|+][diff.inserted.unchanged|blah ][diff.inserted.changed|\xe3\x82\xa4][diff.inserted.unchanged| blah] (esc)