Suggestion.diff_command: Return the right side version blob

Don't run the `git diff` command in this function, instead return the
new blob created for the right hand side of the comparison.

This will facilitate showing the diffs of multiple suggestions at once.
Maybe. I haven't tried the command yet.

Actually, looking at the man page, it doesn't say we can include more
than one blob pair, so I might need to put all of the suggestion changes
into a single blob and compare the original commit with that.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/bin/git-sugdiff.rs b/src/bin/git-sugdiff.rs
index c8ecf40..9c7ff1f 100644
--- a/src/bin/git-sugdiff.rs
+++ b/src/bin/git-sugdiff.rs
@@ -16,6 +16,7 @@
 
 use std::env;
 use std::process;
+use std::process::Command;
 
 use exitcode;
 
@@ -42,7 +43,14 @@ fn main() {
         &config,
         |suggestion| {
             // TODO: Needs to work for multiple suggestions at once
-            suggestion.diff_command().unwrap();
+            let blob = suggestion.diff_command().unwrap();
+
+            Command::new("git")
+                .arg("diff")
+                .arg(format!("{}:{}", suggestion.commit(), suggestion.path()))
+                .arg(blob.to_string())
+                .spawn()
+                .unwrap();
         },
     );
 }