Add 'prr' plugin @ 9b44c3f2d4b79013a00aae82cb59fe63306967ca

Provides syntax highlighting for Prr code review files.

This code was copied from the 'prr' repository
(https://github.com/danobi/prr/) at commit
9b44c3f2d4b79013a00aae82cb59fe63306967ca
(https://github.com/danobi/prr/commit/9b44c3f2d4b79013a00aae82cb59fe63306967ca).

The Vim plugin lives in a subdirectory of the 'prr' repository, which
made it tricky to include as a submodule.

I added GPLv2 license headers based on the license of the Prr project,
however the Vim code seems to indicate it was based on Vim-licensed
code, so I'm not clear on what the actual license is supposed to be.
I'm assuming it's GPL.

2 files changed, 55 insertions, 0 deletions

diff --git a/bundle/prr/ftdetect/prr.vim b/bundle/prr/ftdetect/prr.vim
new file mode 100644
index 0000000..d90cd8b
--- /dev/null
+++ b/bundle/prr/ftdetect/prr.vim
@@ -0,0 +1,17 @@
+" Copyright (c) 2022  Daniel Xu
+"
+" This program is free software; you can redistribute it and/or modify
+" it under the terms of the GNU General Public License as published by
+" the Free Software Foundation; either version 2 of the License, or
+" (at your option) any later version.
+"
+" This program is distributed in the hope that it will be useful,
+" but WITHOUT ANY WARRANTY; without even the implied warranty of
+" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+" GNU General Public License for more details.
+"
+" You should have received a copy of the GNU General Public License along
+" with this program; if not, write to the Free Software Foundation, Inc.,
+" 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+au BufNewFile,BufRead *.prr set filetype=prr
diff --git a/bundle/prr/syntax/prr.vim b/bundle/prr/syntax/prr.vim
new file mode 100644
index 0000000..09fa817
--- /dev/null
+++ b/bundle/prr/syntax/prr.vim
@@ -0,0 +1,38 @@
+" Vim syntax file
+" Language:     prr
+" Maintainer:   Daniel Xu <dxu@dxuuu.xyz>
+" Last Change:  2022 Mar 25
+" Credits:      Bram Moolenaar <Bram@vim.org>
+"
+"               This version is copied and edited from diff.vim
+"
+" Copyright (c) 2022  Daniel Xu
+"
+" This program is free software; you can redistribute it and/or modify
+" it under the terms of the GNU General Public License as published by
+" the Free Software Foundation; either version 2 of the License, or
+" (at your option) any later version.
+"
+" This program is distributed in the hope that it will be useful,
+" but WITHOUT ANY WARRANTY; without even the implied warranty of
+" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+" GNU General Public License for more details.
+"
+" You should have received a copy of the GNU General Public License along
+" with this program; if not, write to the Free Software Foundation, Inc.,
+" 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+" Check whether an earlier file has defined a syntax already
+if exists("b:current_syntax")
+  finish
+endif
+
+syn match diffAdded     "^> +.*"
+syn match diffRemoved   "^> -.*"
+
+" Define the default highlighting.
+" Only used when an item doesn't have highlighting yet
+hi def link diffAdded           Type
+hi def link diffRemoved         Statement
+
+let b:current_syntax = "prr"