view tests/test-committer.t @ 38483:3efadf2317c7

windows: add a method to convert Unix style command lines to Windows style

This started as a copy/paste of `os.path.expandvars()`, but limited to a given
dictionary of variables, converting `foo = foo + bar` to `foo += bar`, and
adding 'b' string prefixes.  Then code was added to make sure that a value being
substituted in wouldn't itself be expanded by cmd.exe.  But that left
inconsistent results between `$var1` and `%var1%` when its value was '%foo%'-
since neither were touched, `$var1` wouldn't expand but `%var1%` would.  So
instead, this just converts the Unix style to Windows style (if the variable
exists, because Windows will leave `%missing%` as-is), and lets cmd.exe do its
thing.

I then dropped the %% -> % conversion (because Windows doesn't do this), and
added the ability to escape the '$' with '\'.  The escape character is dropped,
for consistency with shell handling.

After everything seemed stable and working, running the whole test suite flagged
a problem near the end of test-bookmarks.t:1069.  The problem is cmd.exe won't
pass empty variables to its child, so defined but empty variables are now
skipped.  I can't think of anything better, and it seems like a pre-existing
violation of the documentation, which calls out that HG_OLDNODE is empty on
bookmark creation.

Future additions could potentially be replacing strong quotes with double quotes
(cmd.exe doesn't know what to do with the former), escaping a double quote, and
some tilde expansion via os.path.expanduser().  I've got some doubts about
replacing the strong quotes in case sh.exe is run, but it seems like the right
thing to do the vast majority of the time.  The original form of this was
discussed about a year ago[1].

[1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-July/100735.html

  $ unset HGUSER
  $ EMAIL="My Name <[e-mail]>"
  $ export EMAIL

  $ hg init test
  $ cd test
  $ touch asdf
  $ hg add asdf
  $ hg commit -m commit-1
  $ hg tip
  changeset:   0:53f268a58230
  tag:         tip
  user:        My Name <[e-mail]>
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     commit-1
  

  $ unset EMAIL
  $ echo 1234 > asdf
  $ hg commit -u "[e-mail]" -m commit-1
  $ hg tip
  changeset:   1:3871b2a9e9bf
  tag:         tip
  user:        [e-mail]
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     commit-1
  
  $ echo "[ui]" >> .hg/hgrc
  $ echo "username = foobar <[e-mail]>" >> .hg/hgrc
  $ echo 12 > asdf
  $ hg commit -m commit-1
  $ hg tip
  changeset:   2:8eeac6695c1c
  tag:         tip
  user:        foobar <[e-mail]>
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     commit-1
  
  $ echo 1 > asdf
  $ hg commit -u "[e-mail]" -m commit-1
  $ hg tip
  changeset:   3:957606a725e4
  tag:         tip
  user:        [e-mail]
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     commit-1
  
  $ echo 123 > asdf
  $ echo "[ui]" > .hg/hgrc
  $ echo "username = " >> .hg/hgrc
  $ hg commit -m commit-1
  abort: no username supplied
  (use 'hg config --edit' to set your username)
  [255]

# test alternate config var

  $ echo 1234 > asdf
  $ echo "[ui]" > .hg/hgrc
  $ echo "user = Foo Bar II <[e-mail]>" >> .hg/hgrc
  $ hg commit -m commit-1
  $ hg tip
  changeset:   4:6f24bfb4c617
  tag:         tip
  user:        Foo Bar II <[e-mail]>
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     commit-1
  
# test prompt username

  $ cat > .hg/hgrc <<EOF
  > [ui]
  > askusername = True
  > EOF

  $ echo 12345 > asdf
  $ hg commit --config ui.interactive=False -m ask
  enter a commit username: 
  no username found, using '[^']*' instead (re)
  $ hg rollback -q

  $ hg commit --config ui.interactive=True -m ask <<EOF
  > Asked User <[e-mail]>
  > EOF
  enter a commit username: Asked User <[e-mail]>
  $ hg tip
  changeset:   5:84c91d963b70
  tag:         tip
  user:        Asked User <[e-mail]>
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     ask
  

# test no .hg/hgrc (uses generated non-interactive username)

  $ echo space > asdf
  $ rm .hg/hgrc
  $ hg commit -m commit-1 2>&1
  no username found, using '[^']*' instead (re)

  $ echo space2 > asdf
  $ hg commit -u ' ' -m commit-1
  transaction abort!
  rollback completed
  abort: empty username!
  [255]

# don't add tests here, previous test is unstable

  $ cd ..