Make warning names more consistent

- Replace "Sigs" with "Signatures" in WarningFlag data constructors.
- Replace "PatSyn" with "PatternSynonym" in WarningFlag data
  constructors.
- Deprecate "missing-local-sigs" in favor of "missing-local-signatures".
- Deprecate "missing-exported-sigs" in favor of
  "missing-exported-signatures".
- Deprecate "missing-pat-syn-signatures" in favor of
  "missing-pattern-synonym-signatures".
- Replace "ddump-strsigs" with "ddump-str-signatures"

These complete the tasks that were explicitly mentioned in #11583

Test Plan:
Executed `ghc --show-options` and verified that the flags were changed
as expected.

Reviewers: svenpanne, austin, bgamari

Reviewed By: austin, bgamari

Subscribers: mpickering, thomie

Differential Revision: https://phabricator.haskell.org/D1939

GHC Trac Issues: #11583

2 files changed, 16 insertions, 1 deletions

diff --git a/utils/mkUserGuidePart/Options/CompilerDebugging.hs b/utils/mkUserGuidePart/Options/CompilerDebugging.hs
index 3f1d89999d..ce84a2a48b 100644
--- a/utils/mkUserGuidePart/Options/CompilerDebugging.hs
+++ b/utils/mkUserGuidePart/Options/CompilerDebugging.hs
@@ -120,7 +120,7 @@ compilerDebuggingOptions =
          , flagDescription = "Dump strictness analyser output"
          , flagType = DynamicFlag
          }
-  , flag { flagName = "-ddump-strsigs"
+  , flag { flagName = "-ddump-str-signatures"
          , flagDescription = "Dump strictness signatures"
          , flagType = DynamicFlag
          }
diff --git a/utils/mkUserGuidePart/Options/Warnings.hs b/utils/mkUserGuidePart/Options/Warnings.hs
index 37597f8e0f..a72395e194 100644
--- a/utils/mkUserGuidePart/Options/Warnings.hs
+++ b/utils/mkUserGuidePart/Options/Warnings.hs
@@ -141,17 +141,32 @@ warningsOptions =
          }
   , flag { flagName = "-Wmissing-exported-sigs"
          , flagDescription =
+           "*(deprecated)* "++
            "warn about top-level functions without signatures, only if they "++
            "are exported. takes precedence over -Wmissing-signatures"
          , flagType = DynamicFlag
          , flagReverse = "-Wno-missing-exported-sigs"
          }
+  , flag { flagName = "-Wmissing-exported-signatures"
+         , flagDescription =
+           "warn about top-level functions without signatures, only if they "++
+           "are exported. takes precedence over -Wmissing-signatures"
+         , flagType = DynamicFlag
+         , flagReverse = "-Wno-missing-exported-signatures"
+         }
   , flag { flagName = "-Wmissing-local-sigs"
          , flagDescription =
+           "*(deprecated)* "++
            "warn about polymorphic local bindings without signatures"
          , flagType = DynamicFlag
          , flagReverse = "-Wno-missing-local-sigs"
          }
+  , flag { flagName = "-Wmissing-local-signatures"
+         , flagDescription =
+           "warn about polymorphic local bindings without signatures"
+         , flagType = DynamicFlag
+         , flagReverse = "-Wno-missing-local-signatures"
+         }
   , flag { flagName = "-Wmissing-monadfail-instances"
          , flagDescription =
            "warn when a failable pattern is used in a do-block that does " ++