[PATCH v6 0/7] Trace env variables in run_command()

v6 squashes Junio's changes in 6/7 and moves trace_run_command() from trace.c to run-command.c.

Jeff King (2):
  sq_quote_argv: drop maxlen parameter
  trace: avoid unnecessary quoting

Nguyễn Thái Ngọc Duy (5):
  trace.c: move strbuf_release() out of print_trace_line()
  run-command.c: introduce trace_run_command()
  run-command.c: print program 'git' when tracing git_cmd mode
  run-command.c: print env vars in trace_run_command()
  run-command.c: print new cwd in trace_run_command()

 builtin/am.c                |  2 +-
 builtin/rev-parse.c         |  4 +--
 quote.c                     | 30 ++++++++++++++--
 quote.h                     | 10 +++++-
 run-command.c               | 88 ++++++++++++++++++++++++++++++++++++++++++++-
 t/helper/test-run-command.c |  9 +++++
 t/t0061-run-command.sh      | 37 +++++++++++++++++++
 trace.c                     |  9 +++--
 8 files changed, 178 insertions(+), 11 deletions(-)