wrapper.c: add and use fopen_or_warn()

diff --git a/Documentation/git-commit.txt b/Documentation/git-commit.txt
index 2763edb7a71d9e0fba3487a2f371733ff682e0a5..ed0f5b94b3f200676aedb312391a2dd8fde7325d 100644 (file)
--- a/Documentation/git-commit.txt
+++ b/Documentation/git-commit.txt
@@ -117,9 +117,12 @@ OPTIONS
 
 -z::
 --null::
-       When showing `short` or `porcelain` status output, terminate
-       entries in the status output with NUL, instead of LF. If no
-       format is given, implies the `--porcelain` output format.
+       When showing `short` or `porcelain` status output, print the
+       filename verbatim and terminate the entries with NUL, instead of LF.
+       If no format is given, implies the `--porcelain` output format.
+       Without the `-z` option, filenames with "unusual" characters are
+       quoted as explained for the configuration variable `core.quotePath`
+       (see linkgit:git-config[1]).
 
 -F <file>::
 --file=<file>::