[PATCH v2 2/3] send-email: move bash completions to the perl script

[Thiago Perrotta <tbperrotta@gmail.com>]

As far as bash-completion is concerned, this refactoring is a no-op.

However, this improves `git send-email --git-completion-helper`, which
was previously printing only `git format-patch` flags, to print
`send-email` specific flags as well.

Add a completion test for `--validate` which is a send-email specific
option.

Signed-off-by: Thiago Perrotta <tbperrotta@gmail.com>
---
 contrib/completion/git-completion.bash | 11 +--------
 git-send-email.perl                    | 34 ++++++++++++++++++++++++++
 t/t9902-completion.sh                  |  3 +++
 3 files changed, 38 insertions(+), 10 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 4bdd27ddc8..1b73a4dcc0 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2359,16 +2359,7 @@ _git_send_email ()
 		return
 		;;
 	--*)
-		__gitcomp_builtin send-email "--annotate --bcc --cc --cc-cmd --chain-reply-to
-			--compose --confirm= --dry-run --envelope-sender
-			--from --identity
-			--in-reply-to --no-chain-reply-to --no-signed-off-by-cc
-			--no-suppress-from --no-thread --quiet --reply-to
-			--signed-off-by-cc --smtp-pass --smtp-server
-			--smtp-server-port --smtp-encryption= --smtp-user
-			--subject --suppress-cc= --suppress-from --thread --to
-			--validate --no-validate
-			$__git_format_patch_extra_options"
+		__gitcomp_builtin send-email "$__git_format_patch_extra_options"
 		return
 		;;
 	esac
diff --git a/git-send-email.perl b/git-send-email.perl
index e991bf333d..eec78d76c7 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -114,6 +114,40 @@ sub usage {
 }
 
 sub completion_helper {
+    my @send_email_flags = qw/
+    --annotate
+    --bcc
+    --cc
+    --cc-cmd
+    --chain-reply-to
+    --compose
+    --confirm=
+    --dry-run
+    --envelope-sender
+    --from
+    --identity
+    --in-reply-to
+    --no-chain-reply-to
+    --no-signed-off-by-cc
+    --no-suppress-from
+    --no-thread
+    --quiet
+    --reply-to
+    --signed-off-by-cc
+    --smtp-pass
+    --smtp-server
+    --smtp-server-port
+    --smtp-encryption=
+    --smtp-user
+    --subject
+    --suppress-cc=
+    --suppress-from
+    --thread
+    --to
+    --validate
+    --no-validate
+    /;
+    print "@send_email_flags";
     print Git::command('format-patch', '--git-completion-helper');
     print "\n";
     exit(0);
diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 11573936d5..a4faf64184 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -2139,6 +2139,9 @@ test_expect_success PERL 'send-email' '
 	--cover-from-description=Z
 	--cover-letter Z
 	EOF
+	test_completion "git send-email --val" <<-\EOF &&
+	--validate Z
+	EOF
 	test_completion "git send-email ma" "main "
 '
 
-- 
2.33.0