git: openjdk/jdk: 8314543: gitattributes: make diffs easier to read

[Koichi Sakata]

Changeset: 33d5dfda
Author:    Andrei Rybak <rybak.a.v at gmail.com>
Committer: Koichi Sakata <ksakata at openjdk.org>
Date:      2023-08-18 07:48:50 +0000
URL:       https://git.openjdk.org/jdk/commit/33d5dfdab3098549366088c43797bdcaebe02cd6

8314543: gitattributes: make diffs easier to read

Git supports special hunk headers for several languages in diff output,
which make it easier to read diffs of files in that language, generated
by Git (git-diff, git-show, `git log -p`, etc).  For details, see
`git help gitattributes` or the online documentation.[1]

Add entries to the root .gitattributes file to support showing the hunk
headers for Java, C, C++, Markdown, Shell script, HTML, and CSS.  This
makes it easier to read diffs generated by Git.

[1] https://git-scm.com/docs/gitattributes

Reviewed-by: erikj, ksakata

! .gitattributes