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-rw-r--r--luaotfload-tool.rst10
1 files changed, 8 insertions, 2 deletions
diff --git a/luaotfload-tool.rst b/luaotfload-tool.rst
index 7b75367..31a1010 100644
--- a/luaotfload-tool.rst
+++ b/luaotfload-tool.rst
@@ -116,8 +116,14 @@ miscellaneous
--verbose=N, -v Set verbosity level to *n* or the number of
repetitions of ``-v``.
--quiet No verbose output (log level set to zero).
---log=stdout Redirect log output to terminal (for database
- troubleshooting).
+--log=CHANNEL Redirect log output (for database
+ troubleshooting), where *CHANNEL* can be
+
+ 1) ``stdout`` -> all output will be
+ dumped to the terminal; or
+ 2) ``file`` -> write to a file to the temporary
+ directory (the name will be chosen
+ automatically (**experimental!**).
--version, -V Show version number and exit.
--help, -h Show help message and exit.