# HG changeset patch
# User Georges Racinet <georges.racinet@octobus.net>
# Date 2019-01-23 12:39:27
# Node ID 2f54f31c41aa452415fa61a73f0e23a601cfb23c
# Parent  26ee61c33dee366576a0f7266fea9834985e78ec

rust: working directory revision number constant

This introduces the constant, but does not use it anywhere yet.

diff --git a/rust/hg-core/src/lib.rs b/rust/hg-core/src/lib.rs
--- a/rust/hg-core/src/lib.rs
+++ b/rust/hg-core/src/lib.rs
@@ -16,6 +16,12 @@ pub type Revision = i32;
 
 pub const NULL_REVISION: Revision = -1;
 
+/// Same as `mercurial.node.wdirrev`
+///
+/// This is also equal to `i32::max_value()`, but it's better to spell
+/// it out explicitely, same as in `mercurial.node`
+pub const WORKING_DIRECTORY_REVISION: Revision = 0x7fffffff;
+
 /// The simplest expression of what we need of Mercurial DAGs.
 pub trait Graph {
     /// Return the two parents of the given `Revision`.