blame-options.txt: document --first-parent option

blame/annotate have supported --first-parent since commit 95a4fb0eac ("blame: handle --first-parent"). This adds a blurb on that option to the documentation. Signed-off-by: Raymond E. Pasco <ray@ameretat.dev> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Raymond E. Pasco committed Aug 6, 2020 at 14:52 UTC 11bc12ae1ecf78fe445c12e53455f981299d708d
1 file changed +6
Documentation/blame-options.txt
+6
index 5d122db6e9..88750af7ae 100644 --- a/Documentation/blame-options.txt +++ b/Documentation/blame-options.txt @@ -36,6 +36,12 @@ include::line-range-format.txt[] START. `git blame --reverse START` is taken as `git blame --reverse START..HEAD` for convenience. +--first-parent:: + Follow only the first parent commit upon seeing a merge + commit. This option can be used to determine when a line + was introduced to a particular integration branch, rather + than when it was introduced to the history overall. + -p:: --porcelain:: Show in a format designed for machine consumption.