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mingw: document the standard handle redirection

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This feature has been in Git for Windows since v2.11.0(2), as an
experimental option. Now it is considered mature, and it is high time to
document it properly.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin 2017-11-01 18:10:33 +01:00 committed by Junio C Hamano
parent 1a172e4ac1
commit b2f55717c7
1 changed files with 18 additions and 0 deletions
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18
Documentation/git.txt
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@ -709,6 +709,24 @@ of clones and fetches.
the background which do not want to cause lock contention with
other operations on the repository. Defaults to `1`.
`GIT_REDIRECT_STDIN`::
`GIT_REDIRECT_STDOUT`::
`GIT_REDIRECT_STDERR`::
Windows-only: allow redirecting the standard input/output/error
handles to paths specified by the environment variables. This is
particularly useful in multi-threaded applications where the
canonical way to pass standard handles via `CreateProcess()` is
not an option because it would require the handles to be marked
inheritable (and consequently *every* spawned process would
inherit them, possibly blocking regular Git operations). The
primary intended use case is to use named pipes for communication
(e.g. `\\.\pipe\my-git-stdin-123`).
+
Two special values are supported: `off` will simply close the
corresponding standard handle, and if `GIT_REDIRECT_STDERR` is
`2>&1`, standard error will be redirected to the same handle as
standard output.
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