Fix haml-lint `UnnecessaryStringOutput` for views (#27531)

.haml-lint_todo.yml

@@ -11,26 +11,6 @@ linters:
   LineLength:
     enabled: false
 
-  # Offense count: 22
-  UnnecessaryStringOutput:
-    exclude:
-      - 'app/views/accounts/show.html.haml'
-      - 'app/views/admin/custom_emojis/_custom_emoji.html.haml'
-      - 'app/views/admin/relays/_relay.html.haml'
-      - 'app/views/admin/rules/_rule.html.haml'
-      - 'app/views/admin/statuses/index.html.haml'
-      - 'app/views/auth/registrations/_session.html.haml'
-      - 'app/views/disputes/strikes/show.html.haml'
-      - 'app/views/notification_mailer/_status.html.haml'
-      - 'app/views/settings/two_factor_authentication_methods/index.html.haml'
-      - 'app/views/statuses/_detailed_status.html.haml'
-      - 'app/views/statuses/_poll.html.haml'
-      - 'app/views/statuses/_simple_status.html.haml'
-      - 'app/views/user_mailer/suspicious_sign_in.html.haml'
-      - 'app/views/user_mailer/webauthn_credential_added.html.haml'
-      - 'app/views/user_mailer/webauthn_credential_deleted.html.haml'
-      - 'app/views/user_mailer/welcome.html.haml'
-
   # Offense count: 45
   RuboCop:
     exclude:

app/views/accounts/show.html.haml

@@ -1,5 +1,5 @@
 - content_for :page_title do
-  = "#{display_name(@account)} (#{acct(@account)})"
+  #{display_name(@account)} (#{acct(@account)})
 
 - content_for :header_tags do
   - if @account.user_prefers_noindex?

app/views/admin/custom_emojis/_custom_emoji.html.haml

@@ -6,7 +6,7 @@
       = custom_emoji_tag(custom_emoji)
 
     .batch-table__row__content__text
-      %samp= ":#{custom_emoji.shortcode}:"
+      %samp :#{custom_emoji.shortcode}:
 
       - if custom_emoji.local?
         %span.information-badge= custom_emoji.category&.name || t('admin.custom_emojis.uncategorized')

app/views/admin/relays/_relay.html.haml

@@ -5,16 +5,16 @@
     - if relay.accepted?
       %span.positive-hint
         = fa_icon('check')
-        = ' '
+         
         = t 'admin.relays.enabled'
     - elsif relay.pending?
       = fa_icon('hourglass')
-      = ' '
+       
       = t 'admin.relays.pending'
     - else
       %span.negative-hint
         = fa_icon('times')
-        = ' '
+         
         = t 'admin.relays.disabled'
   %td
     - if relay.accepted?

app/views/admin/rules/_rule.html.haml

@@ -1,6 +1,6 @@
 .announcements-list__item
   = link_to edit_admin_rule_path(rule), class: 'announcements-list__item__title' do
-    = "#{rule_counter + 1}."
+    #{rule_counter + 1}.
     = truncate(rule.text)
 
   .announcements-list__item__action-bar

app/views/admin/statuses/index.html.haml

@@ -1,7 +1,7 @@
 - content_for :page_title do
   = t('admin.statuses.title')
   \-
-  = "@#{@account.pretty_acct}"
+  @#{@account.pretty_acct}
 
 .filters
   .filter-subset

app/views/auth/registrations/_session.html.haml

@@ -2,7 +2,7 @@
   %td
     %span{ title: session.user_agent }<
       = fa_icon "#{session_device_icon(session)} fw", 'aria-label': session_device_icon(session)
-      = ' '
+      &nbsp;
       = t 'sessions.description', browser: t("sessions.browsers.#{session.browser}", default: session.browser.to_s), platform: t("sessions.platforms.#{session.platform}", default: session.platform.to_s)
   %td
     %samp= session.ip

app/views/disputes/strikes/show.html.haml

@@ -10,13 +10,13 @@
   %p.hint
     %span.positive-hint
       = fa_icon 'check'
-      = ' '
+       
       = t 'disputes.strikes.appeal_approved'
 - elsif @appeal.persisted? && @appeal.rejected?
   %p.hint
     %span.negative-hint
       = fa_icon 'times'
-      = ' '
+       
       = t 'disputes.strikes.appeal_rejected'
 
 .report-header

app/views/notification_mailer/_status.html.haml

@@ -23,7 +23,7 @@
                                       = image_tag full_asset_url(status.account.avatar.url), alt: ''
                                     %td{ align: 'left' }
                                       %bdi= display_name(status.account)
-                                      = "@#{status.account.pretty_acct}"
+                                      @#{status.account.pretty_acct}
 
                               - if status.spoiler_text?
                                 .auto-dir

app/views/settings/two_factor_authentication_methods/index.html.haml

@@ -7,7 +7,7 @@
 %p.hint
   %span.positive-hint
     = fa_icon 'check'
-    = ' '
+     
     = t 'two_factor_authentication.enabled'
 
 .table-wrapper

app/views/statuses/_detailed_status.html.haml

@@ -62,18 +62,18 @@
       - else
         = fa_icon('reply-all')
       %span.detailed-status__reblogs>= friendly_number_to_human status.replies_count
-      = ' '
+       
     ·
     - if status.public_visibility? || status.unlisted_visibility?
       %span.detailed-status__link
         = fa_icon('retweet')
         %span.detailed-status__reblogs>= friendly_number_to_human status.reblogs_count
-        = ' '
+         
       ·
     %span.detailed-status__link
       = fa_icon('star')
       %span.detailed-status__favorites>= friendly_number_to_human status.favourites_count
-      = ' '
+       
 
     - if user_signed_in?
       ·

app/views/statuses/_poll.html.haml

@@ -11,7 +11,7 @@
           - percent = total_votes_count.positive? ? 100 * option.votes_count / total_votes_count : 0
           %label.poll__option><
             %span.poll__number><
-              = "#{percent.round}%"
+              #{percent.round}%
             %span.poll__option__text
               = prerender_custom_emojis(h(option.title), status.emojis)
             - if own_votes.include?(index)

app/views/statuses/_simple_status.html.haml

@@ -23,7 +23,7 @@
         %span.display-name
           %bdi
             %strong.display-name__html.p-name.emojify= display_name(status.account, custom_emojify: true, autoplay: prefers_autoplay?)
-          = ' '
+           
           %span.display-name__account
             = acct(status.account)
             = fa_icon('lock') if status.account.locked?

app/views/user_mailer/suspicious_sign_in.html.haml

@@ -41,10 +41,10 @@
                           %tr
                             %td.column-cell.text-center
                               %p
-                                %strong= "#{t('sessions.ip')}:"
+                                %strong #{t('sessions.ip')}:
                                 = @remote_ip
                                 %br/
-                                %strong= "#{t('sessions.browser')}:"
+                                %strong #{t('sessions.browser')}:
                                 %span{ title: @user_agent }= t 'sessions.description', browser: t("sessions.browsers.#{@detection.id}", default: @detection.id.to_s), platform: t("sessions.platforms.#{@detection.platform.id}", default: @detection.platform.id.to_s)
                                 %br/
                                 = l(@timestamp.in_time_zone(@resource.time_zone.presence), format: :with_time_zone)

app/views/user_mailer/webauthn_credential_added.html.haml

@@ -20,7 +20,7 @@
                                       = image_tag full_pack_url('media/images/mailer/icon_lock_open.png'), alt: ''
 
                               %h1= t 'devise.mailer.webauthn_credential.added.title'
-                              %p.lead= "#{t('devise.mailer.webauthn_credential.added.explanation')}:"
+                              %p.lead #{t('devise.mailer.webauthn_credential.added.explanation')}:
                               %p.lead= @webauthn_credential.nickname
 
 %table.email-table{ cellspacing: 0, cellpadding: 0 }

app/views/user_mailer/webauthn_credential_deleted.html.haml

@@ -20,7 +20,7 @@
                                       = image_tag full_pack_url('media/images/mailer/icon_lock_open.png'), alt: ''
 
                               %h1= t 'devise.mailer.webauthn_credential.deleted.title'
-                              %p.lead= "#{t('devise.mailer.webauthn_credential.deleted.explanation')}:"
+                              %p.lead #{t('devise.mailer.webauthn_credential.deleted.explanation')}:
                               %p.lead= @webauthn_credential.nickname
 
 %table.email-table{ cellspacing: 0, cellpadding: 0 }

app/views/user_mailer/welcome.html.haml

@@ -41,7 +41,7 @@
                               %table.input{ align: 'center', cellspacing: 0, cellpadding: 0 }
                                 %tbody
                                   %tr
-                                    %td= "@#{@resource.account.username}@#{@instance}"
+                                    %td @#{@resource.account.username}@#{@instance}
                     .col-3
                       %table.column{ cellspacing: 0, cellpadding: 0 }
                         %tbody