Output more info for `--version` (#888)

Useful when requesting more info to help investigating issues.

2 files changed, 15 insertions, 0 deletions

diff --git a/src/cli.rs b/src/cli.rs
index 04e83987..f1b27d26 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 extern crate log;
+use built_info;
 use clap::{Arg, App};
 use index::{Line, Column};
 use config::{Dimensions, Shell};
@@ -20,6 +21,14 @@ use std::borrow::Cow;
 
 const DEFAULT_TITLE: &'static str = "Alacritty";
 
+fn crate_long_version() -> String {
+    format!("{} (git commit {}) [{} build using {}])",
+        built_info::PKG_VERSION,
+        built_info::GIT_VERSION.unwrap_or(""),
+        built_info::PROFILE,
+        built_info::RUSTC_VERSION)
+}
+
 /// Options specified on the command line
 pub struct Options {
     pub live_config_reload: Option<bool>,
@@ -56,6 +65,7 @@ impl Options {
 
         let matches = App::new(crate_name!())
             .version(crate_version!())
+            .long_version(crate_long_version().as_str())
             .author(crate_authors!("\n"))
             .about(crate_description!())
             .arg(Arg::with_name("ref-test")
diff --git a/src/lib.rs b/src/lib.rs
index 255215c7..081259cd 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -108,3 +108,8 @@ pub mod gl {
     #![allow(non_upper_case_globals)]
     include!(concat!(env!("OUT_DIR"), "/gl_bindings.rs"));
 }
+
+#[allow(dead_code)]
+mod built_info {
+    include!(concat!(env!("OUT_DIR"), "/built.rs"));
+}