Rename `git-sugpatch` to `git-sugdiff`

The word "patch" reminds me more of the `patch` Unix command, which is
what `git-sugapply` does.

Since this command outputs diffs, it makes more sense to call it
`sugdiff`. That also brings these closer to the native Git commands,
`git-diff` and `git-apply`.

I had chosen "patch" originally because the command generated a unified
diff that could be used as a patch file to apply to the repo.

7 files changed, 21 insertions, 76 deletions

diff --git a/README.md b/README.md
index 7107aa9..a247bb8 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ copy in a Git repository.
 	$ git checkout 74a39f3
 	Note: checking out '74a39f3'.
 	…
-	$ git sugpatch https://github.com/cli/cli/pull/1150#discussion_r438352211
+	$ git sugdiff https://github.com/cli/cli/pull/1150#discussion_r438352211
 	diff --git a/pkg/cmd/api/api.go b/pkg/cmd/api/api.go
 	index b4a8dbd..c081b50 100644
 	--- a/pkg/cmd/api/api.go
diff --git a/doc/git-sugapply.1 b/doc/git-sugapply.1
index d9eb195..c1a03ad 100644
--- a/doc/git-sugapply.1
+++ b/doc/git-sugapply.1
@@ -2,12 +2,12 @@
 .\"     Title: git-sugapply
 .\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
 .\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
-.\"      Date: 08/06/2020
+.\"      Date: 08/23/2020
 .\"    Manual: \ \&
 .\"    Source: \ \&
 .\"  Language: English
 .\"
-.TH "GIT\-SUGAPPLY" "1" "08/06/2020" "\ \&" "\ \&"
+.TH "GIT\-SUGAPPLY" "1" "08/23/2020" "\ \&" "\ \&"
 .\" -----------------------------------------------------------------
 .\" * Define some portability stuff
 .\" -----------------------------------------------------------------
@@ -125,4 +125,4 @@ $ git sugapply 459692838 https://github\&.com/teddywing/git\-suggestion/pull/1#d
 .\}
 .SH "SEE ALSO"
 .sp
-git\-sugpatch(1)
+git\-sugdiff(1)
diff --git a/doc/git-sugapply.1.txt b/doc/git-sugapply.1.txt
index d513505..ca55726 100644
--- a/doc/git-sugapply.1.txt
+++ b/doc/git-sugapply.1.txt
@@ -68,4 +68,4 @@ They can also be mixed:
 
 SEE ALSO
 --------
-git-sugpatch(1)
+git-sugdiff(1)
diff --git a/doc/git-sugpatch.1 b/doc/git-sugdiff.1
index 6f5ad15..345b91c 100644
--- a/doc/git-sugpatch.1
+++ b/doc/git-sugdiff.1
@@ -1,13 +1,13 @@
 '\" t
-.\"     Title: git-sugpatch
+.\"     Title: git-sugdiff
 .\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
 .\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
-.\"      Date: 08/06/2020
+.\"      Date: 08/23/2020
 .\"    Manual: \ \&
 .\"    Source: \ \&
 .\"  Language: English
 .\"
-.TH "GIT\-SUGPATCH" "1" "08/06/2020" "\ \&" "\ \&"
+.TH "GIT\-SUGDIFF" "1" "08/23/2020" "\ \&" "\ \&"
 .\" -----------------------------------------------------------------
 .\" * Define some portability stuff
 .\" -----------------------------------------------------------------
@@ -28,10 +28,10 @@
 .\" * MAIN CONTENT STARTS HERE *
 .\" -----------------------------------------------------------------
 .SH "NAME"
-git-sugpatch \- Show diffs for GitHub suggestions
+git-sugdiff \- Show diffs for GitHub suggestions
 .SH "SYNOPSIS"
 .sp
-\fIgit sugpatch\fR [options] <suggestion>\&...
+\fIgit sugdiff\fR [options] <suggestion>\&...
 .SH "DESCRIPTION"
 .sp
 Show the diffs of the given GitHub suggestion references\&.
@@ -94,7 +94,7 @@ Suggestion references can be specified either as URLs:
 .RS 4
 .\}
 .nf
-$ git sugpatch https://github\&.com/teddywing/git\-suggestion/pull/1#discussion_r459691747
+$ git sugdiff https://github\&.com/teddywing/git\-suggestion/pull/1#discussion_r459691747
 .fi
 .if n \{\
 .RE
@@ -106,7 +106,7 @@ or as comment IDs:
 .RS 4
 .\}
 .nf
-$ git sugpatch 459691747
+$ git sugdiff 459691747
 .fi
 .if n \{\
 .RE
@@ -118,7 +118,7 @@ They can also be mixed:
 .RS 4
 .\}
 .nf
-$ git sugpatch 459692838 https://github\&.com/teddywing/git\-suggestion/pull/1#discussion_r459691747
+$ git sugdiff 459692838 https://github\&.com/teddywing/git\-suggestion/pull/1#discussion_r459691747
 .fi
 .if n \{\
 .RE
diff --git a/doc/git-sugpatch.1.txt b/doc/git-sugdiff.1.txt
index c1513a4..9960949 100644
--- a/doc/git-sugpatch.1.txt
+++ b/doc/git-sugdiff.1.txt
@@ -1,13 +1,13 @@
-git-sugpatch(1)
-===============
+git-sugdiff(1)
+==============
 
 NAME
 ----
-git-sugpatch - Show diffs for GitHub suggestions
+git-sugdiff - Show diffs for GitHub suggestions
 
 SYNOPSIS
 --------
-'git sugpatch' [options] <suggestion>...
+'git sugdiff' [options] <suggestion>...
 
 DESCRIPTION
 -----------
@@ -55,15 +55,15 @@ EXAMPLES
 --------
 Suggestion references can be specified either as URLs:
 
-	$ git sugpatch https://github.com/teddywing/git-suggestion/pull/1#discussion_r459691747
+	$ git sugdiff https://github.com/teddywing/git-suggestion/pull/1#discussion_r459691747
 
 or as comment IDs:
 
-	$ git sugpatch 459691747
+	$ git sugdiff 459691747
 
 They can also be mixed:
 
-	$ git sugpatch 459692838 https://github.com/teddywing/git-suggestion/pull/1#discussion_r459691747
+	$ git sugdiff 459692838 https://github.com/teddywing/git-suggestion/pull/1#discussion_r459691747
 
 SEE ALSO
 --------
diff --git a/src/bin/git-sugdiff.rs b/src/bin/git-sugdiff.rs
index 3bc787a..c703e2b 100644
--- a/src/bin/git-sugdiff.rs
+++ b/src/bin/git-sugdiff.rs
@@ -29,7 +29,7 @@ fn main() {
 
     let config = match Config::get(
         &args,
-        "usage: git sugpatch [options] <suggestion>...",
+        "usage: git sugdiff [options] <suggestion>...",
     ) {
         Ok(c) => c,
         Err(e) => {
diff --git a/src/bin/git-sugpatch.rs b/src/bin/git-sugpatch.rs
deleted file mode 100644
index 615bcff..0000000
--- a/src/bin/git-sugpatch.rs
+++ /dev/null
@@ -1,55 +0,0 @@
-// Copyright (c) 2020  Teddy Wing
-//
-// 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 3 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, see <https://www.gnu.org/licenses/>.
-
-
-use std::env;
-use std::process;
-
-use exitcode;
-
-use github_suggestion_cli::{gseprintln, for_suggestion};
-use github_suggestion_cli::config::Config;
-
-
-fn main() {
-    let args: Vec<_> = env::args().collect();
-
-    let config = match Config::get(
-        &args,
-        "usage: git sugpatch [options] <suggestion>...",
-    ) {
-        Ok(c) => c,
-        Err(e) => {
-            gseprintln!(e);
-
-            process::exit(exitcode::CONFIG);
-        },
-    };
-
-    for_suggestion(
-        &config,
-        |suggestion| {
-            let diff = match suggestion.diff() {
-                Ok(d) => d,
-                Err(e) => {
-                    gseprintln!(e);
-                    process::exit(exitcode::UNAVAILABLE);
-                },
-            };
-
-            print!("{}", diff);
-        },
-    );
-}