tests: invoke printenv.py via sh -c for test portability

On Windows platform, invoking printenv.py directly via hook is
problematic, because:

  - unless binding between *.py suffix and python runtime, application
    selector dialog is displayed, and running test is blocked at each
    printenv.py invocations

  - it isn't safe to assume binding between *.py suffix and python
    runtime, because application binding is easily broken

    For example, installing IDE (VisualStudio with Python Tools, or
    so) often requires binding between source files and IDE itself.

This patch invokes printenv.py via sh -c for test portability. This is
a kind of follow up for d19787db6fe0, which eliminated explicit
"python" for printenv.py. There are already other 'sh -c "printenv.py"'
in *.t files, and this fix should be reasonable.

This changes were confirmed in cases below:

  - without any application binding for *.py suffix
  - with binding between *.py suffix and VisualStudio

This patch also replaces "echo + redirection" style with "heredoc"
style, because:

  - hook command line is parsed by cmd.exe as shell at first, and
  - single quotation can't quote arguments on cmd.exe, therefore,
  - "printenv.py foobar" should be quoted by double quotation, but
  - nested quoting (or tricky escaping) isn't readable

tests/test-bundle.t

@@ -216,8 +216,10 b" Make sure bundlerepo doesn't leak tempfi"
 
 Pull ../full.hg into empty (with hook)
 
-  $ echo "[hooks]" >> .hg/hgrc
-  $ echo "changegroup = printenv.py changegroup" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > [hooks]
+  > changegroup = sh -c "printenv.py changegroup"
+  > EOF
 
 doesn't work (yet ?)
 

tests/test-hook.t

@@ -16,9 +16,9 b' commit hooks can see env vars'
   > precommit = sh -c  "HG_LOCAL= HG_NODE= HG_TAG= printenv.py precommit"
   > pretxncommit = sh -c "HG_LOCAL= HG_TAG= printenv.py pretxncommit"
   > pretxncommit.tip = hg -q tip
-  > pre-identify = printenv.py pre-identify 1
-  > pre-cat = printenv.py pre-cat
-  > post-cat = printenv.py post-cat
+  > pre-identify = sh -c "printenv.py pre-identify 1"
+  > pre-cat = sh -c "printenv.py pre-cat"
+  > post-cat = sh -c "printenv.py post-cat"
   > pretxnopen = sh -c "HG_LOCAL= HG_TAG= printenv.py pretxnopen"
   > pretxnclose = sh -c "HG_LOCAL= HG_TAG= printenv.py pretxnclose"
   > txnclose = sh -c "HG_LOCAL= HG_TAG= printenv.py txnclose"
@@ -47,9 +47,9 b' changegroup hooks can see env vars'
 
   $ cat > .hg/hgrc <<EOF
   > [hooks]
-  > prechangegroup = printenv.py prechangegroup
-  > changegroup = printenv.py changegroup
-  > incoming = printenv.py incoming
+  > prechangegroup = sh -c "printenv.py prechangegroup"
+  > changegroup = sh -c "printenv.py changegroup"
+  > incoming = sh -c "printenv.py incoming"
   > EOF
 
 pretxncommit and commit hooks can see both parents of merge
@@ -122,7 +122,7 b' tag hooks can see env vars'
 
   $ cd ../a
   $ cat >> .hg/hgrc <<EOF
-  > pretag = printenv.py pretag
+  > pretag = sh -c "printenv.py pretag"
   > tag = sh -c "HG_PARENT1= HG_PARENT2= printenv.py tag"
   > EOF
   $ hg tag -d '3 0' a
@@ -142,7 +142,9 b' tag hooks can see env vars'
 
 pretag hook can forbid tagging
 
-  $ echo "pretag.forbid = printenv.py pretag.forbid 1" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > pretag.forbid = sh -c "printenv.py pretag.forbid 1"
+  > EOF
   $ hg tag -d '4 0' fa
   pretag hook: HG_LOCAL=0 HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_TAG=fa
   pretag.forbid hook: HG_LOCAL=0 HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_TAG=fa
@@ -157,8 +159,10 b' pretag hook can forbid tagging'
 pretxncommit hook can see changeset, can roll back txn, changeset no
 more there after
 
-  $ echo "pretxncommit.forbid0 = hg tip -q" >> .hg/hgrc
-  $ echo "pretxncommit.forbid1 = printenv.py pretxncommit.forbid 1" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > pretxncommit.forbid0 = sh -c "hg tip -q"
+  > pretxncommit.forbid1 = sh -c "printenv.py pretxncommit.forbid 1"
+  > EOF
   $ echo z > z
   $ hg add z
   $ hg -q tip
@@ -196,7 +200,9 b' more there after'
 
 precommit hook can prevent commit
 
-  $ echo "precommit.forbid = printenv.py precommit.forbid 1" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > precommit.forbid = sh -c "printenv.py precommit.forbid 1"
+  > EOF
   $ hg commit -m 'fail' -d '4 0'
   precommit hook: HG_PARENT1=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10
   precommit.forbid hook: HG_PARENT1=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10
@@ -207,14 +213,18 b' precommit hook can prevent commit'
 
 preupdate hook can prevent update
 
-  $ echo "preupdate = printenv.py preupdate" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > preupdate = sh -c "printenv.py preupdate"
+  > EOF
   $ hg update 1
   preupdate hook: HG_PARENT1=ab228980c14d
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
 
 update hook
 
-  $ echo "update = printenv.py update" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > update = sh -c "printenv.py update"
+  > EOF
   $ hg update
   preupdate hook: HG_PARENT1=539e4b31b6dc
   update hook: HG_ERROR=0 HG_PARENT1=539e4b31b6dc
@@ -222,7 +232,9 b' update hook'
 
 pushkey hook
 
-  $ echo "pushkey = printenv.py pushkey" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > pushkey = sh -c "printenv.py pushkey"
+  > EOF
   $ cd ../b
   $ hg bookmark -r null foo
   $ hg push -B foo ../a
@@ -239,7 +251,9 b' pushkey hook'
 
 listkeys hook
 
-  $ echo "listkeys = printenv.py listkeys" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > listkeys = sh -c "printenv.py listkeys"
+  > EOF
   $ hg bookmark -r null bar
   pretxnopen hook: HG_TXNID=TXN:* HG_TXNNAME=bookmark (glob)
   pretxnclose hook: HG_BOOKMARK_MOVED=1 HG_PENDING=$TESTTMP/a HG_TXNID=TXN:* HG_TXNNAME=bookmark (glob)
@@ -255,7 +269,9 b' listkeys hook'
 
 test that prepushkey can prevent incoming keys
 
-  $ echo "prepushkey = printenv.py prepushkey.forbid 1" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > prepushkey = sh -c "printenv.py prepushkey.forbid 1"
+  > EOF
   $ cd ../b
   $ hg bookmark -r null baz
   $ hg push -B baz ../a
@@ -273,7 +289,9 b' test that prepushkey can prevent incomin'
 
 test that prelistkeys can prevent listing keys
 
-  $ echo "prelistkeys = printenv.py prelistkeys.forbid 1" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > prelistkeys = sh -c "printenv.py prelistkeys.forbid 1"
+  > EOF
   $ hg bookmark -r null quux
   pretxnopen hook: HG_TXNID=TXN:* HG_TXNNAME=bookmark (glob)
   pretxnclose hook: HG_BOOKMARK_MOVED=1 HG_PENDING=$TESTTMP/a HG_TXNID=TXN:* HG_TXNNAME=bookmark (glob)
@@ -294,7 +312,7 b' prechangegroup hook can prevent incoming'
   3:07f3376c1e65
   $ cat > .hg/hgrc <<EOF
   > [hooks]
-  > prechangegroup.forbid = printenv.py prechangegroup.forbid 1
+  > prechangegroup.forbid = sh -c "printenv.py prechangegroup.forbid 1"
   > EOF
   $ hg pull ../a
   pulling from ../a
@@ -309,7 +327,7 b' incoming changes no longer there after'
   $ cat > .hg/hgrc <<EOF
   > [hooks]
   > pretxnchangegroup.forbid0 = hg tip -q
-  > pretxnchangegroup.forbid1 = printenv.py pretxnchangegroup.forbid 1
+  > pretxnchangegroup.forbid1 = sh -c "printenv.py pretxnchangegroup.forbid 1"
   > EOF
   $ hg pull ../a
   pulling from ../a
@@ -332,8 +350,8 b' outgoing hooks can see env vars'
   $ rm .hg/hgrc
   $ cat > ../a/.hg/hgrc <<EOF
   > [hooks]
-  > preoutgoing = printenv.py preoutgoing
-  > outgoing = printenv.py outgoing
+  > preoutgoing = sh -c "printenv.py preoutgoing"
+  > outgoing = sh -c "printenv.py outgoing"
   > EOF
   $ hg pull ../a
   pulling from ../a
@@ -351,7 +369,9 b' outgoing hooks can see env vars'
 
 preoutgoing hook can prevent outgoing changes
 
-  $ echo "preoutgoing.forbid = printenv.py preoutgoing.forbid 1" >> ../a/.hg/hgrc
+  $ cat >> ../a/.hg/hgrc <<EOF
+  > preoutgoing.forbid = sh -c "printenv.py preoutgoing.forbid 1"
+  > EOF
   $ hg pull ../a
   pulling from ../a
   searching for changes
@@ -365,8 +385,8 b' outgoing hooks work for local clones'
   $ cd ..
   $ cat > a/.hg/hgrc <<EOF
   > [hooks]
-  > preoutgoing = printenv.py preoutgoing
-  > outgoing = printenv.py outgoing
+  > preoutgoing = sh -c "printenv.py preoutgoing"
+  > outgoing = sh -c "printenv.py outgoing"
   > EOF
   $ hg clone a c
   preoutgoing hook: HG_SOURCE=clone
@@ -377,7 +397,9 b' outgoing hooks work for local clones'
 
 preoutgoing hook can prevent outgoing changes for local clones
 
-  $ echo "preoutgoing.forbid = printenv.py preoutgoing.forbid 1" >> a/.hg/hgrc
+  $ cat >> a/.hg/hgrc <<EOF
+  > preoutgoing.forbid = sh -c "printenv.py preoutgoing.forbid 1"
+  > EOF
   $ hg clone a zzz
   preoutgoing hook: HG_SOURCE=clone
   preoutgoing.forbid hook: HG_SOURCE=clone
@@ -750,7 +772,7 b' This also creates the `to` repo for the '
   $ cd ..
   $ cat << EOF >> hgrc-with-post-init-hook
   > [hooks]
-  > post-init = printenv.py post-init
+  > post-init = sh -c "printenv.py post-init"
   > EOF
   $ HGRCPATH=hgrc-with-post-init-hook hg init to
   post-init hook: HG_ARGS=init to HG_OPTS={'insecure': None, 'remotecmd': '', 'ssh': ''} HG_PATS=['to'] HG_RESULT=0

tests/test-http-bundle1.t

@@ -127,8 +127,10 b' incoming via HTTP'
 pull
 
   $ cd copy-pull
-  $ echo '[hooks]' >> .hg/hgrc
-  $ echo "changegroup = printenv.py changegroup" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > [hooks]
+  > changegroup = sh -c "printenv.py changegroup"
+  > EOF
   $ hg pull
   pulling from http://localhost:$HGPORT1/
   searching for changes

tests/test-http.t

@@ -118,8 +118,10 b' incoming via HTTP'
 pull
 
   $ cd copy-pull
-  $ echo '[hooks]' >> .hg/hgrc
-  $ echo "changegroup = printenv.py changegroup" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > [hooks]
+  > changegroup = sh -c "printenv.py changegroup"
+  > EOF
   $ hg pull
   pulling from http://localhost:$HGPORT1/
   searching for changes

tests/test-https.t

@@ -203,8 +203,10 b' Inability to verify peer certificate wil'
 pull without cacert
 
   $ cd copy-pull
-  $ echo '[hooks]' >> .hg/hgrc
-  $ echo "changegroup = printenv.py changegroup" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > [hooks]
+  > changegroup = sh -c "printenv.py changegroup"
+  > EOF
   $ hg pull $DISABLECACERTS
   pulling from https://localhost:$HGPORT/
   warning: connecting to localhost using legacy security technology (TLS 1.0); see https://mercurial-scm.org/wiki/SecureConnections for more info (?)

tests/test-push-http-bundle1.t

@@ -66,10 +66,12 b' expect authorization error: must have au'
 
 expect success
 
-  $ echo 'allow_push = *' >> .hg/hgrc
-  $ echo '[hooks]' >> .hg/hgrc
-  $ echo "changegroup = printenv.py changegroup 0" >> .hg/hgrc
-  $ echo "pushkey = printenv.py pushkey 0" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > allow_push = *
+  > [hooks]
+  > changegroup = sh -c "printenv.py changegroup 0"
+  > pushkey = sh -c "printenv.py pushkey 0"
+  > EOF
   $ req
   pushing to http://localhost:$HGPORT/
   searching for changes
@@ -151,7 +153,7 b' expect push success, phase change failur'
   > push_ssl = false
   > allow_push = *
   > [hooks]
-  > prepushkey = printenv.py prepushkey 1
+  > prepushkey = sh -c "printenv.py prepushkey 1"
   > EOF
   $ req
   pushing to http://localhost:$HGPORT/
@@ -164,7 +166,9 b' expect push success, phase change failur'
 
 expect phase change success
 
-  $ echo "prepushkey = printenv.py prepushkey 0" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > prepushkey = sh -c "printenv.py prepushkey 0"
+  > EOF
   $ req
   pushing to http://localhost:$HGPORT/
   searching for changes

tests/test-push-http.t

@@ -56,10 +56,12 b' expect authorization error: must have au'
 
 expect success
 
-  $ echo 'allow_push = *' >> .hg/hgrc
-  $ echo '[hooks]' >> .hg/hgrc
-  $ echo "changegroup = printenv.py changegroup 0" >> .hg/hgrc
-  $ echo "pushkey = printenv.py pushkey 0" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > allow_push = *
+  > [hooks]
+  > changegroup = sh -c "printenv.py changegroup 0"
+  > pushkey = sh -c "printenv.py pushkey 0"
+  > EOF
   $ req
   pushing to http://localhost:$HGPORT/
   searching for changes
@@ -114,7 +116,7 b' expect push success, phase change failur'
   > push_ssl = false
   > allow_push = *
   > [hooks]
-  > prepushkey = printenv.py prepushkey 1
+  > prepushkey = sh -c "printenv.py prepushkey 1"
   > EOF
   $ req
   pushing to http://localhost:$HGPORT/
@@ -133,7 +135,9 b' expect push success, phase change failur'
 
 expect phase change success
 
-  $ echo "prepushkey = printenv.py prepushkey 0" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > prepushkey = sh -c "printenv.py prepushkey 0"
+  > EOF
   $ req
   pushing to http://localhost:$HGPORT/
   searching for changes

tests/test-ssh-bundle1.t

@@ -38,7 +38,7 b' configure for serving'
   > uncompressed = True
   > 
   > [hooks]
-  > changegroup = printenv.py changegroup-in-remote 0 ../dummylog
+  > changegroup = sh -c "printenv.py changegroup-in-remote 0 ../dummylog"
   > EOF
   $ cd ..
 
@@ -114,8 +114,10 b' verify'
   crosschecking files in changesets and manifests
   checking files
   2 files, 3 changesets, 2 total revisions
-  $ echo '[hooks]' >> .hg/hgrc
-  $ echo "changegroup = printenv.py changegroup-in-local 0 ../dummylog" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > [hooks]
+  > changegroup = sh -c "printenv.py changegroup-in-local 0 ../dummylog"
+  > EOF
 
 empty default pull
 

tests/test-ssh.t

@@ -32,7 +32,7 b' configure for serving'
   > uncompressed = True
   > 
   > [hooks]
-  > changegroup = printenv.py changegroup-in-remote 0 ../dummylog
+  > changegroup = sh -c "printenv.py changegroup-in-remote 0 ../dummylog"
   > EOF
   $ cd ..
 
@@ -108,8 +108,10 b' verify'
   crosschecking files in changesets and manifests
   checking files
   2 files, 3 changesets, 2 total revisions
-  $ echo '[hooks]' >> .hg/hgrc
-  $ echo "changegroup = printenv.py changegroup-in-local 0 ../dummylog" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > [hooks]
+  > changegroup = sh -c "printenv.py changegroup-in-local 0 ../dummylog"
+  > EOF
 
 empty default pull
 

tests/test-static-http.t

@@ -53,8 +53,10 b' check for HTTP opener failures when cach'
 
   $ rm .hg/cache/*
   $ cd ../local
-  $ echo '[hooks]' >> .hg/hgrc
-  $ echo "changegroup = printenv.py changegroup" >> .hg/hgrc
+  $ cat >> .hg/hgrc <<EOF
+  > [hooks]
+  > changegroup = sh -c "printenv.py changegroup"
+  > EOF
   $ hg pull
   pulling from static-http://localhost:$HGPORT/remote
   searching for changes