[PATCH v2 0/2] tr2: shows the scope unconditionally with config

From: Teng Long <dyroneteng@gmail.com>

Diff from v1:

* Fix the premature code in [1/2] by Junio's comment in:

  https://public-inbox.org/git/xmqqy1wkc0yw.fsf@gitster.g/

* Optimize the documentaion in [1/2] by Ævar's comment in:

  https://public-inbox.org/git/220722.86fsits91m.gmgdl@evledraar.gmail.com/

I send this patch version a little earlier maybe because some context not fully discussed or solved, intend to avoid context signal disappearance because it's been lasted a while now.

Thanks.

Teng Long (2):
  api-trace2.txt: print config key-value pair
  tr2: shows scope unconditionally in addition to key-value pair

 Documentation/technical/api-trace2.txt | 40 ++++++++++++++++++++++++++
 trace2/tr2_tgt_event.c                 |  3 ++
 trace2/tr2_tgt_normal.c                |  5 +++-
 trace2/tr2_tgt_perf.c                  |  9 ++++--
 4 files changed, 54 insertions(+), 3 deletions(-)

Range-diff against v1:
1:  bebd97c832 ! 1:  84bd8a71d7 api-trace2.txt: print config key-value pair
    @@ Documentation/technical/api-trace2.txt: at offset 508.
      This example also shows that thread names are assigned in a racy manner
      as each thread starts and allocates TLS storage.
      
    -+Print Configs::
    ++Config (def param) Events::
     +
     +	  Dump "interesting" config values to trace2 log.
     ++
    -+The environment variable `GIT_TRACE2_CONFIG_PARAMS` and configuration
    -+`trace2.configparams` can be used to output config values which you care
    -+about(see linkgit:git-config[1). For example:
    ++We can optionally emit configuration events, see
    ++`trace2.configparams` in linkgit:git-config[1] for how to enable
    ++it.
     ++
     +----------------
     +$ git config color.ui auto
2:  2f8fce6599 ! 2:  9856058df6 tr2: shows scope unconditionally in addition to key-value pair
    @@ Documentation/technical/api-trace2.txt: The "exec_id" field is a command-unique
      {
      	"event":"def_param",
      	...
    -+	scope: <a string that 'git config --show-scope' would return>
    ++	"scope":"global",
      	"param":"core.abbrev",
      	"value":"7"
      }
    -@@ Documentation/technical/api-trace2.txt: Print Configs::
    - +
    - The environment variable `GIT_TRACE2_CONFIG_PARAMS` and configuration
    - `trace2.configparams` can be used to output config values which you care
    --about(see linkgit:git-config[1). For example:
    -+about(see linkgit:git-config[1). For example assume that we want to config
    -+different `color.ui` values in multiple scopes, such as:
    +@@ Documentation/technical/api-trace2.txt: We can optionally emit configuration events, see
    + it.
      +
      ----------------
     -$ git config color.ui auto