- If this variable is set to "1", "2" or "true" (comparison
- is case insensitive), Git will print `trace:` messages on
- stderr telling about alias expansion, built-in command
- execution and external command execution.
- If this variable is set to an integer value greater than 1
- and lower than 10 (strictly) then Git will interpret this
- value as an open file descriptor and will try to write the
- trace messages into this file descriptor.
- Alternatively, if this variable is set to an absolute path
- (starting with a '/' character), Git will interpret this
- as a file path and will try to write the trace messages
- into it.
+ Enables general trace messages, e.g. alias expansion, built-in
+ command execution and external command execution.
++
+If this variable is set to "1", "2" or "true" (comparison
+is case insensitive), trace messages will be printed to
+stderr.
++
+If the variable is set to an integer value greater than 2
+and lower than 10 (strictly) then Git will interpret this
+value as an open file descriptor and will try to write the
+trace messages into this file descriptor.
++
+Alternatively, if the variable is set to an absolute path
+(starting with a '/' character), Git will interpret this
+as a file path and will try to write the trace messages
+into it.
++
+Unsetting the variable, or setting it to empty, "0" or
+"false" (case insensitive) disables trace messages.