From: Linus Arver <redacted>

The command can take inputs that are either just a commit message, or
an email-like output such as git-format-patch which includes a commit
message, "---" divider, and patch part. The existing explanation blends
these two inputs together in the first sentence

    This command reads some patches or commit messages

which then necessitates using the "commit message part" phrasing (as
opposed to just "commit message") because the input is ambiguous per the
above definition.

This change separates the two input types and explains them separately,
and so there is no longer a need to use the "commit message part"
phrase.

Signed-off-by: Linus Arver <redacted>
---
 Documentation/git-interpret-trailers.txt | 35 +++++++++++++-----------
 1 file changed, 19 insertions(+), 16 deletions(-)

diff --git a/Documentation/git-interpret-trailers.txt b/Documentation/git-interpret-trailers.txt
index da8fec7d5fe..ffde97a6c3d 100644
--- a/Documentation/git-interpret-trailers.txt
+++ b/Documentation/git-interpret-trailers.txt

@@ -18,17 +18,22 @@ Add or parse 'trailer' lines that look similar to RFC 822 e-mail
 headers, at the end of the otherwise free-form part of a commit
 message.

-This command reads some patches or commit messages from either the
-<file> arguments or the standard input if no <file> is specified. If
-`--parse` is specified, the output consists of the parsed trailers.
-
+This command reads commit messages from either the
+<file> arguments or the standard input if no <file> is specified.
+If `--parse` is specified, the output consists of the parsed trailers.
 Otherwise, this command applies the arguments passed using the
-`--trailer` option, if any, to the commit message part of each input
-file. The result is emitted on the standard output.
+`--trailer` option, if any, to each input file. The result is emitted on the
+standard output.
+
+This command can also operate on the output of linkgit:git-format-patch[1],
+which is more elaborate than a plain commit message. Namely, such output
+includes a commit message (as above), a "---" divider line, and a patch part.
+For these inputs, the divider and patch parts are ignored, unless `--no-divider`
+is specified.