diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,9 +1,13 @@
 # Revision history for simple-prompt
 
+## 0.2.1 (2023-08-09)
+- do not trim spaces for yesNo and yesNoDefault
+- Internal: timedInput renamed to clearedInput
+
 ## 0.2.0 (2023-05-28)
 - new API using haskeline and MonadIO
 - prompt ignores buffered stdin lines if it returns in milliseconds
-- promptEnter replaces Prompt_
+- promptEnter replaces prompt_
 - new functions: promptEnter, promptInitial, promptNonEmpty, promptPassword
 - yesNo and yesNoDefault replace yesno
 - internal haskeline functions in SimplePrompt.Internal: including
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -19,4 +19,4 @@
 functional haskeline InputT monad transformer-based prompt functions:
 
 - `runPrompt`, `getPrompt*`
-- `untilInput`, `mapInput`, `timedInput`, `nonEmptyInput`.
+- `untilInput`, `mapInput`, `clearedInput`, `nonEmptyInput`.
diff --git a/simple-prompt.cabal b/simple-prompt.cabal
--- a/simple-prompt.cabal
+++ b/simple-prompt.cabal
@@ -1,5 +1,5 @@
 name:                simple-prompt
-version:             0.2.0.1
+version:             0.2.1
 synopsis:            Simple commandline text prompt functions
 description:
         The library provides prompt functions for reading user input:
@@ -23,7 +23,7 @@
                      || == 8.8.4
                      || == 8.10.7
                      || == 9.0.2
-                     || == 9.2.7
+                     || == 9.2.8
                      || == 9.4.5
 
 source-repository head
diff --git a/src/SimplePrompt.hs b/src/SimplePrompt.hs
--- a/src/SimplePrompt.hs
+++ b/src/SimplePrompt.hs
@@ -13,23 +13,23 @@
   ) where
 
 import Control.Monad (void)
-import Data.List.Extra (lower, trim)
+import Data.List.Extra (lower)
 
 import SimplePrompt.Internal
 
 #include "monadconstraint.h"
 
 -- FIXME use haveTerminalUI ?
--- | prompt which drops buffered input (using timedInput)
+-- | prompt which drops buffered input (using clearedInput)
 --
 -- Ignores buffered input lines (ie if input line gotten in under 5ms)
 prompt :: MONADCONSTRAINT => String -> m String
-prompt = runPrompt . timedInput . getPromptLine
+prompt = runPrompt . clearedInput . getPromptLine
 
 -- FIXME non-empty?
--- | reads string with initial input (using timedInput)
+-- | reads string with initial input (using clearedInput)
 promptInitial :: MONADCONSTRAINT => String -> String -> m String
-promptInitial s = runPrompt . timedInput . getPromptInitial s
+promptInitial s = runPrompt . clearedInput . getPromptInitial s
 
 -- | reads string with buffering
 promptBuffered :: MONADCONSTRAINT => String -> m String
@@ -46,12 +46,12 @@
 -- | prompt for character key
 promptChar :: MONADCONSTRAINT => String -> m Char
 promptChar =
-  runPrompt . timedInput . getPromptChar
+  runPrompt . clearedInput . getPromptChar
 
 -- | prompt for Enter key
 promptEnter :: MONADCONSTRAINT => String -> m ()
 promptEnter =
-  void . runPrompt . untilInput (== "") . timedInput . getPromptLine
+  void . runPrompt . untilInput (== "") . clearedInput . getPromptLine
 
 -- | Yes-No prompt (accepts only {y,n,yes,no} case-insensitive)
 yesNo :: MONADCONSTRAINT => String -> m Bool
@@ -59,21 +59,21 @@
   runPrompt . mapInput maybeYN . getPromptLine $ desc ++ "? [y/n]"
   where
     maybeYN inp =
-      case trim (lower inp) of
+      case lower inp of
         "y" -> Just True
         "yes" -> Just True
         "n" -> Just False
         "no" -> Just False
         _ ->  Nothing
 
--- | Yes-No prompt with default (uses timedInput)
+-- | Yes-No prompt with default (uses clearedInput)
 yesNoDefault :: MONADCONSTRAINT => Bool -> String -> m Bool
 yesNoDefault yes desc =
-  runPrompt . mapInput maybeYN' . timedInput . getPromptLine $
+  runPrompt . mapInput maybeYN' . clearedInput . getPromptLine $
   desc ++ "? " ++ if yes then "[Y/n]" else "[y/N]"
   where
     maybeYN' inp =
-      case trim (lower inp) of
+      case lower inp of
         "" -> Just yes
         "y" -> Just True
         "yes" -> Just True
diff --git a/src/SimplePrompt/Internal.hs b/src/SimplePrompt/Internal.hs
--- a/src/SimplePrompt/Internal.hs
+++ b/src/SimplePrompt/Internal.hs
@@ -10,7 +10,7 @@
   untilInput,
   mapInput,
   nonEmptyInput,
-  timedInput,
+  clearedInput,
   MonadIO,
 #if MIN_VERSION_haskeline(0,8,0)
   MonadMask
@@ -81,8 +81,9 @@
 nonEmptyInput = untilInput (not . null)
 
 -- | repeat prompt if input returned within milliseconds
-timedInput :: MonadIO m => InputT m a -> InputT m a
-timedInput prompter = do
+-- This prevents buffered stdin lines from being used.
+clearedInput :: MonadIO m => InputT m a -> InputT m a
+clearedInput prompter = do
   start <- liftIO getCurrentTime
   input <- prompter
   end <- liftIO getCurrentTime
@@ -90,5 +91,5 @@
   if diff < 0.005
     then do
     outputStrLn $ "ignoring buffered input: " ++ show diff ++ " too quick"
-    timedInput prompter
+    clearedInput prompter
     else return input