tests: avoid unexpected result at invocation of *.py file on Windows

Invocation of "diff tool.py" in test-extdiff.t tests whether
shellquote() is applied on specified command as expected.

But direct invocation of "*.py" file might cause unexpected result on
Windows according to suffix binding.

For example, starting IDE, showing dialog to choose program to be
used, and so on. In such case, running test-extdiff.t is easily timed
out.

This patch uses intermediate *.bat file on Windows, to avoid such
unexpected result. Naming that intermediate file as "diff tool.bat" is
enough to test applying shellquote().

tests/test-extdiff.t

@@ -1,436 +1,444 b''
   $ echo "[extensions]" >> $HGRCPATH
   $ echo "extdiff=" >> $HGRCPATH
 
   $ hg init a
   $ cd a
   $ echo a > a
   $ echo b > b
   $ hg add
   adding a
   adding b
 
 Should diff cloned directories:
 
   $ hg extdiff -o -r $opt
   Only in a: a
   Only in a: b
   [1]
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > cmd.falabala = echo
   > opts.falabala = diffing
   > cmd.edspace = echo
   > opts.edspace = "name  <[e-mail]>"
   > EOF
 
   $ hg falabala
   diffing a.000000000000 a
   [1]
 
   $ hg help falabala
   hg falabala [OPTION]... [FILE]...
   
   use external program to diff repository (or selected files)
   
       Show differences between revisions for the specified files, using the
       following program:
   
         'echo'
   
       When two revision arguments are given, then changes are shown between
       those revisions. If only one revision is specified then that revision is
       compared to the working directory, and, when no revisions are specified,
       the working directory files are compared to its parent.
   
   options ([+] can be repeated):
   
    -o --option OPT [+]      pass option to comparison program
    -r --rev REV [+]         revision
    -c --change REV          change made by revision
       --patch               compare patches for two revisions
    -I --include PATTERN [+] include names matching the given patterns
    -X --exclude PATTERN [+] exclude names matching the given patterns
    -S --subrepos            recurse into subrepositories
   
   (some details hidden, use --verbose to show complete help)
 
   $ hg ci -d '0 0' -mtest1
 
   $ echo b >> a
   $ hg ci -d '1 0' -mtest2
 
 Should diff cloned files directly:
 
   $ hg falabala -r 0:1
   diffing "*\\extdiff.*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   diffing */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Specifying an empty revision should abort.
 
   $ hg extdiff -p diff --patch --rev 'ancestor()' --rev 1
   abort: empty revision on one side of range
   [255]
 
 Test diff during merge:
 
   $ hg update -C 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo c >> c
   $ hg add c
   $ hg ci -m "new branch" -d '1 0'
   created new head
   $ hg merge 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
 Should diff cloned file against wc file:
 
   $ hg falabala
   diffing "*\\extdiff.*\\a.2a13a4d2da36\\a" "*\\a\\a" (glob) (windows !)
   diffing */extdiff.*/a.2a13a4d2da36/a */a/a (glob) (no-windows !)
   [1]
 
 
 Test --change option:
 
   $ hg ci -d '2 0' -mtest3
 
   $ hg falabala -c 1
   diffing "*\\extdiff.*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   diffing */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Check diff are made from the first parent:
 
   $ hg falabala -c 3 || echo "diff-like tools yield a non-zero exit code"
   diffing "*\\extdiff.*\\a.2a13a4d2da36\\a" "a.46c0e4daeb72\\a" (glob) (windows !)
   diffing */extdiff.*/a.2a13a4d2da36/a a.46c0e4daeb72/a (glob) (no-windows !)
   diff-like tools yield a non-zero exit code
 
 issue3153: ensure using extdiff with removed subrepos doesn't crash:
 
   $ hg init suba
   $ cd suba
   $ echo suba > suba
   $ hg add
   adding suba
   $ hg ci -m "adding suba file"
   $ cd ..
   $ echo suba=suba > .hgsub
   $ hg add
   adding .hgsub
   $ hg ci -Sm "adding subrepo"
   $ echo > .hgsub
   $ hg ci -m "removing subrepo"
   $ hg falabala -r 4 -r 5 -S
   diffing a.398e36faf9c6 a.5ab95fb166c4
   [1]
 
 issue4463: usage of command line configuration without additional quoting
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > cmd.4463a = echo
   > opts.4463a = a-naked 'single quoted' "double quoted"
   > 4463b = echo b-naked 'single quoted' "double quoted"
   > echo =
   > EOF
   $ hg update -q -C 0
   $ echo a >> a
 
   $ hg --debug 4463a | grep '^running'
   running 'echo a-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo a-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug 4463b | grep '^running'
   running 'echo b-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo b-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug echo | grep '^running'
   running '*echo* "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running '*echo */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
 
 (getting options from other than extdiff section)
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > # using diff-tools diffargs
   > 4463b2 = echo
   > # using merge-tools diffargs
   > 4463b3 = echo
   > # no diffargs
   > 4463b4 = echo
   > [diff-tools]
   > 4463b2.diffargs = b2-naked 'single quoted' "double quoted"
   > [merge-tools]
   > 4463b3.diffargs = b3-naked 'single quoted' "double quoted"
   > EOF
 
   $ hg --debug 4463b2 | grep '^running'
   running 'echo b2-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo b2-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug 4463b3 | grep '^running'
   running 'echo b3-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo b3-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug 4463b4 | grep '^running'
   running 'echo "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug 4463b4 --option b4-naked --option 'being quoted' | grep '^running'
   running 'echo b4-naked "being quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running "echo b4-naked 'being quoted' */a $TESTTMP/a/a" in */extdiff.* (glob) (no-windows !)
   $ hg --debug extdiff -p echo --option echo-naked --option 'being quoted' | grep '^running'
   running 'echo echo-naked "being quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running "echo echo-naked 'being quoted' */a $TESTTMP/a/a" in */extdiff.* (glob) (no-windows !)
 
   $ touch 'sp ace'
   $ hg add 'sp ace'
   $ hg ci -m 'sp ace'
   created new head
   $ echo > 'sp ace'
 
 Test pre-72a89cf86fcd backward compatibility with half-baked manual quoting
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > odd =
   > [merge-tools]
   > odd.diffargs = --foo='\$clabel' '\$clabel' "--bar=\$clabel" "\$clabel"
   > odd.executable = echo
   > EOF
 
   $ hg --debug odd | grep '^running'
   running '"*\\echo.exe" --foo="sp ace" "sp ace" --bar="sp ace" "sp ace"' in * (glob) (windows !)
   running "*/echo --foo='sp ace' 'sp ace' --bar='sp ace' 'sp ace'" in * (glob) (no-windows !)
 
 Empty argument must be quoted
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > kdiff3 = echo
   > [merge-tools]
   > kdiff3.diffargs=--L1 \$plabel1 --L2 \$clabel \$parent \$child
   > EOF
 
   $ hg --debug kdiff3 -r0 | grep '^running'
   running 'echo --L1 "@0" --L2 "" a.8a5febb7f867 a' in * (glob) (windows !)
   running "echo --L1 '@0' --L2 '' a.8a5febb7f867 a" in * (glob) (no-windows !)
 
 
 Test extdiff of multiple files in tmp dir:
 
   $ hg update -C 0 > /dev/null
   $ echo changed > a
   $ echo changed > b
 #if execbit
   $ chmod +x b
 #endif
 
 Diff in working directory, before:
 
   $ hg diff --git
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -a
   +changed
   diff --git a/b b/b
   old mode 100644 (execbit !)
   new mode 100755 (execbit !)
   --- a/b
   +++ b/b
   @@ -1,1 +1,1 @@
   -b
   +changed
 
 
 Edit with extdiff -p:
 
 Prepare custom diff/edit tool:
 
   $ cat > 'diff tool.py' << EOT
   > #!$PYTHON
   > import time
   > time.sleep(1) # avoid unchanged-timestamp problems
   > file('a/a', 'ab').write('edited\n')
   > file('a/b', 'ab').write('edited\n')
   > EOT
 
 #if execbit
   $ chmod +x 'diff tool.py'
 #endif
 
 will change to /tmp/extdiff.TMP and populate directories a.TMP and a
 and start tool
 
+#if windows
+  $ cat > 'diff tool.bat' << EOF
+  > @$PYTHON "`pwd`/diff tool.py"
+  > EOF
+  $ hg extdiff -p "`pwd`/diff tool.bat"
+  [1]
+#else
   $ hg extdiff -p "`pwd`/diff tool.py"
   [1]
+#endif
 
 Diff in working directory, after:
 
   $ hg diff --git
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,2 @@
   -a
   +changed
   +edited
   diff --git a/b b/b
   old mode 100644 (execbit !)
   new mode 100755 (execbit !)
   --- a/b
   +++ b/b
   @@ -1,1 +1,2 @@
   -b
   +changed
   +edited
 
 Test extdiff with --option:
 
   $ hg extdiff -p echo -o this -c 1
   this "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   this */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
   $ hg falabala -o this -c 1
   diffing this "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   diffing this */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Test extdiff's handling of options with spaces in them:
 
   $ hg edspace -c 1
   "name  <[e-mail]>" "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   name  <[e-mail]> */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
   $ hg extdiff -p echo -o "name  <[e-mail]>" -c 1
   "name  <[e-mail]>" "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   name  <[e-mail]> */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Test with revsets:
 
   $ hg extdif -p echo -c "rev(1)"
   "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
   $ hg extdif -p echo -r "0::1"
   "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Fallback to merge-tools.tool.executable|regkey
   $ mkdir dir
   $ cat > 'dir/tool.sh' << 'EOF'
   > #!/bin/sh
   > # Mimic a tool that syncs all attrs, including mtime
   > cp $1/a $2/a
   > touch -r $1/a $2/a
   > chmod +x $2/a
   > echo "** custom diff **"
   > EOF
 #if execbit
   $ chmod +x dir/tool.sh
 #endif
 
 Windows can't run *.sh directly, so create a shim executable that can be.
 Without something executable, the next hg command will try to run `tl` instead
 of $tool (and fail).
 #if windows
   $ cat > dir/tool.bat <<EOF
   > @sh -c "`pwd`/dir/tool.sh %1 %2"
   > EOF
   $ tool=`pwd`/dir/tool.bat
 #else
   $ tool=`pwd`/dir/tool.sh
 #endif
 
   $ cat a
   changed
   edited
   $ hg --debug tl --config extdiff.tl= --config merge-tools.tl.executable=$tool
   making snapshot of 2 files from rev * (glob)
     a
     b
   making snapshot of 2 files from working directory
     a
     b
   running '$TESTTMP/a/dir/tool.bat a.* a' in */extdiff.* (glob) (windows !)
   running '$TESTTMP/a/dir/tool.sh a.* a' in */extdiff.* (glob) (no-windows !)
   ** custom diff **
   file changed while diffing. Overwriting: $TESTTMP/a/a (src: */extdiff.*/a/a) (glob)
   cleaning up temp directory
   [1]
   $ cat a
   a
 
 #if execbit
   $ [ -x a ]
 
   $ cat > 'dir/tool.sh' << 'EOF'
   > #!/bin/sh
   > chmod -x $2/a
   > echo "** custom diff **"
   > EOF
 
   $ hg --debug tl --config extdiff.tl= --config merge-tools.tl.executable=$tool
   making snapshot of 2 files from rev * (glob)
     a
     b
   making snapshot of 2 files from working directory
     a
     b
   running '$TESTTMP/a/dir/tool.sh a.* a' in */extdiff.* (glob)
   ** custom diff **
   file changed while diffing. Overwriting: $TESTTMP/a/a (src: */extdiff.*/a/a) (glob)
   cleaning up temp directory
   [1]
 
   $ [ -x a ]
   [1]
 #endif
 
   $ cd ..
 
 #if symlink
 
 Test symlinks handling (issue1909)
 
   $ hg init testsymlinks
   $ cd testsymlinks
   $ echo a > a
   $ hg ci -Am adda
   adding a
   $ echo a >> a
   $ ln -s missing linka
   $ hg add linka
   $ hg falabala -r 0 --traceback
   diffing testsymlinks.07f494440405 testsymlinks
   [1]
   $ cd ..
 
 #endif
 
 Test handling of non-ASCII paths in generated docstrings (issue5301)
 
   >>> open("u", "w").write("\xa5\xa5")
   $ U=`cat u`
 
   $ HGPLAIN=1 hg --config hgext.extdiff= --config extdiff.cmd.td=hi help -k xyzzy
   abort: no matches
   (try 'hg help' for a list of topics)
   [255]
 
   $ HGPLAIN=1 hg --config hgext.extdiff= --config extdiff.cmd.td=hi help td > /dev/null
 
   $ LC_MESSAGES=ja_JP.UTF-8 hg --config hgext.extdiff= --config extdiff.cmd.td=$U help -k xyzzy
   abort: no matches
   (try 'hg help' for a list of topics)
   [255]
 
   $ LC_MESSAGES=ja_JP.UTF-8 hg --config hgext.extdiff= --config extdiff.cmd.td=$U help td \
   > | grep "^      '"
         '\xa5\xa5'