fmt-merge-msg: add '--(no-)log' options and 'merge.log' config variable

diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt
index 5d9c36985f4e37cdbecf29e4be52918dc4e8781f..6513c2efe17668d5fc25a21385ed117ec76b40b5 100644 (file)
--- a/Documentation/git-rev-parse.txt
+++ b/Documentation/git-rev-parse.txt
@@ -229,13 +229,13 @@ blobs contained in a commit.
 * A colon, optionally followed by a stage number (0 to 3) and a
   colon, followed by a path; this names a blob object in the
   index at the given path.  Missing stage number (and the colon
-  that follows it) names an stage 0 entry. During a merge, stage
+  that follows it) names a stage 0 entry. During a merge, stage
   1 is the common ancestor, stage 2 is the target branch's version
   (typically the current branch), and stage 3 is the version from
   the branch being merged.
 
-Here is an illustration, by Jon Loeliger.  Both node B and C are
-a commit parents of commit node A.  Parent commits are ordered
+Here is an illustration, by Jon Loeliger.  Both commit nodes B
+and C are parents of commit node A.  Parent commits are ordered
 left-to-right.
 
     G   H   I   J
@@ -291,7 +291,7 @@ and its parent commits exists.  `r1{caret}@` notation means all
 parents of `r1`.  `r1{caret}!` includes commit `r1` but excludes
 its all parents.
 
-Here are a handful examples:
+Here are a handful of examples:
 
    D                G H D
    D F              G H I J D F
@@ -325,7 +325,7 @@ The lines after the separator describe the options.
 Each line of options has this format:
 
 ------------
-<opt_spec><arg_spec>? SP+ help LF
+<opt_spec><flags>* SP+ help LF
 ------------
 
 `<opt_spec>`::
@@ -334,10 +334,17 @@ Each line of options has this format:
        is necessary. `h,help`, `dry-run` and `f` are all three correct
        `<opt_spec>`.
 
-`<arg_spec>`::
-       an `<arg_spec>` tells the option parser if the option has an argument
-       (`=`), an optional one (`?` though its use is discouraged) or none
-       (no `<arg_spec>` in that case).
+`<flags>`::
+       `<flags>` are of `*`, `=`, `?` or `!`.
+       * Use `=` if the option takes an argument.
+
+       * Use `?` to mean that the option is optional (though its use is discouraged).
+
+       * Use `*` to mean that this option should not be listed in the usage
+         generated for the `-h` argument. It's shown for `--help-all` as
+         documented in linkgit:gitcli[5].
+
+       * Use `!` to not make the corresponding negated long option available.
 
 The remainder of the line, after stripping the spaces, is used
 as the help associated to the option.