Remove lint and unit excuses and "--advice" and "--excuse" flags from "arc diff"

Summary:
Ref T13544. Long ago, "arc diff" started prompting the user to provide "excuses" when they submitted changes with failing lint or unit tests.

At the time, "arc" was generally more heavy-handed and the review workflow had fewer points where it provided feedback about lint and test issues.

As the workflow has evolved, there is now significantly more feedback (promotion behavior from Draft in Differential, warnings on "arc land", etc). These days, these prompts feel archaic and like they're just getting in the way.

When lint/unit have Harbormaster-triggered components, this prompt is also too early (since Harbormaster tests may fail or raise lint messages later). A modern version of this would look more like putting revisions in some kind of locked state until authors explain issues. It's possible that's worth building, but I'd like to see more interest in it. I suspect this feature is largely just a "nag" feature these days with few benefits.

Test Plan: Grepped for "advice", "excuse", "handleServerMessage", "sendMessage", "getSkipExcuse", "getErrorExcuse", got no hits. Generated this revision.

Maniphest Tasks: T13544

Differential Revision: https://secure.phabricator.com/D21297

src/workflow/ArcanistDiffWorkflow.php

@@ -13,7 +13,6 @@ final class ArcanistDiffWorkflow extends ArcanistWorkflow {
   private $console;
   private $hasWarnedExternals = false;
   private $unresolvedLint;
-  private $excuses = array('lint' => null, 'unit' => null);
   private $testResults;
   private $diffID;
   private $revisionID;
@@ -215,12 +214,6 @@ EOTEXT
       'allow-untracked' => array(
         'help' => pht('Skip checks for untracked files in the working copy.'),
       ),
-      'excuse' => array(
-        'param' => 'excuse',
-        'help' => pht(
-          'Provide a prepared in advance excuse for any lints/tests '.
-          'shall they fail.'),
-      ),
       'less-context' => array(
         'help' => pht(
           "Normally, files are diffed with full context: the entire file is ".
@@ -236,11 +229,6 @@ EOTEXT
           'lint' => true,
         ),
       ),
-      'advice' => array(
-        'help' => pht(
-          'Require excuse for lint advice in addition to lint warnings and '.
-          'errors.'),
-      ),
       'only-new' => array(
         'param' => 'bool',
         'help' => pht(
@@ -418,8 +406,6 @@ EOTEXT
       $revision = $this->buildRevisionFromCommitMessage($commit_message);
     }
 
-    $server = $this->console->getServer();
-    $server->setHandler(array($this, 'handleServerMessage'));
     $data = $this->runLintUnit();
 
     $lint_result = $data['lintResult'];
@@ -427,20 +413,6 @@ EOTEXT
     $unit_result = $data['unitResult'];
     $this->testResults = $data['testResults'];
 
-    if ($this->getArgument('nolint')) {
-      $this->excuses['lint'] = $this->getSkipExcuse(
-        pht('Provide explanation for skipping lint or press Enter to abort:'),
-        'lint-excuses');
-    }
-
-    if ($this->getArgument('nounit')) {
-      $this->excuses['unit'] = $this->getSkipExcuse(
-        pht(
-          'Provide explanation for skipping unit tests '.
-          'or press Enter to abort:'),
-        'unit-excuses');
-    }
-
     $changes = $this->generateChanges();
     if (!$changes) {
       throw new ArcanistUsageException(
@@ -1256,34 +1228,22 @@ EOTEXT
 
       switch ($lint_result) {
         case ArcanistLintWorkflow::RESULT_OKAY:
-          if ($this->getArgument('advice') &&
+          $this->console->writeOut(
-              $lint_workflow->getUnresolvedMessages()) {
+            "<bg:green>** %s **</bg> %s\n",
-            $this->getErrorExcuse(
+            pht('LINT OKAY'),
-              'lint',
+            pht('No lint problems.'));
-              pht('Lint issued unresolved advice.'),
-              'lint-excuses');
-          } else {
-            $this->console->writeOut(
-              "<bg:green>** %s **</bg> %s\n",
-              pht('LINT OKAY'),
-              pht('No lint problems.'));
-          }
           break;
         case ArcanistLintWorkflow::RESULT_WARNINGS:
-          $this->getErrorExcuse(
+          $this->console->writeOut(
-            'lint',
+            "<bg:yellow>** %s **</bg> %s\n",
-            pht('Lint issued unresolved warnings.'),
+            pht('LINT MESSAGES'),
-            'lint-excuses');
+            pht('Lint issued unresolved warnings.'));
           break;
         case ArcanistLintWorkflow::RESULT_ERRORS:
           $this->console->writeOut(
             "<bg:red>** %s **</bg> %s\n",
             pht('LINT ERRORS'),
             pht('Lint raised errors!'));
-          $this->getErrorExcuse(
-            'lint',
-            pht('Lint issued unresolved errors!'),
-            'lint-excuses');
           break;
       }
 
@@ -1357,10 +1317,6 @@ EOTEXT
             "<bg:red>** %s **</bg> %s\n",
             pht('UNIT ERRORS'),
             pht('Unit testing raised errors!'));
-          $this->getErrorExcuse(
-            'unit',
-            pht('Unit test results include failures!'),
-            'unit-excuses');
           break;
       }
 
@@ -1385,66 +1341,6 @@ EOTEXT
     return $this->testResults;
   }
 
-  private function getSkipExcuse($prompt, $history) {
-    $excuse = $this->getArgument('excuse');
-
-    if ($excuse === null) {
-      $history = $this->getRepositoryAPI()->getScratchFilePath($history);
-      $excuse = phutil_console_prompt($prompt, $history);
-      if ($excuse == '') {
-        throw new ArcanistUserAbortException();
-      }
-    }
-
-    return $excuse;
-  }
-
-  private function getErrorExcuse($type, $prompt, $history) {
-    if ($this->getArgument('excuse')) {
-      $this->console->sendMessage(array(
-        'type'    => $type,
-        'confirm'  => $prompt.' '.pht('Ignore them?'),
-      ));
-      return;
-    }
-
-    $history = $this->getRepositoryAPI()->getScratchFilePath($history);
-
-    $prompt .= ' '.
-      pht('Provide explanation to continue or press Enter to abort.');
-    $this->console->writeOut("\n\n%s", phutil_console_wrap($prompt));
-    $this->console->sendMessage(array(
-      'type'    => $type,
-      'prompt'  => pht('Explanation:'),
-      'history' => $history,
-    ));
-  }
-
-  public function handleServerMessage(PhutilConsoleMessage $message) {
-    $data = $message->getData();
-
-    if ($this->getArgument('excuse')) {
-      try {
-        phutil_console_require_tty();
-      } catch (PhutilConsoleStdinNotInteractiveException $ex) {
-        $this->excuses[$data['type']] = $this->getArgument('excuse');
-        return null;
-      }
-    }
-
-    $response = '';
-    if (isset($data['prompt'])) {
-      $response = phutil_console_prompt($data['prompt'], idx($data, 'history'));
-    } else if (phutil_console_confirm($data['confirm'])) {
-      $response = $this->getArgument('excuse');
-    }
-    if ($response == '') {
-      throw new ArcanistUserAbortException();
-    }
-    $this->excuses[$data['type']] = $response;
-    return null;
-  }
-
 
 /* -(  Commit and Update Messages  )----------------------------------------- */
 
@@ -2450,12 +2346,6 @@ EOTEXT
    * @task diffprop
    */
   private function updateLintDiffProperty() {
-    if (strlen($this->excuses['lint'])) {
-      $this->updateDiffProperty(
-        'arc:lint-excuse',
-        json_encode($this->excuses['lint']));
-    }
-
     if (!$this->hitAutotargets) {
       if ($this->unresolvedLint) {
         $this->updateDiffProperty(
@@ -2474,11 +2364,6 @@ EOTEXT
    * @task diffprop
    */
   private function updateUnitDiffProperty() {
-    if (strlen($this->excuses['unit'])) {
-      $this->updateDiffProperty('arc:unit-excuse',
-        json_encode($this->excuses['unit']));
-    }
-
     if (!$this->hitAutotargets) {
       if ($this->testResults) {
         $this->updateDiffProperty('arc:unit', json_encode($this->testResults));