From 33aa088183a963ce75192c46a76c3342aa0d005b Mon Sep 17 00:00:00 2001
From: Karl Heuer <kwzh@gnu.org>
Date: Fri, 27 Feb 1998 21:52:08 +0000
Subject: [PATCH] (mapcar1): Handle bool-vectors. (Fmapconcat, Fmapcar): Doc
 fixes. (Flength): For char-table, length is based on max valid char code.

---
 src/fns.c | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/fns.c b/src/fns.c
index a724fa5c0d1..49855103bcd 100644
--- a/src/fns.c
+++ b/src/fns.c
@@ -125,7 +125,9 @@ To get the number of characters, use `chars-in-string'")
   else if (VECTORP (sequence))
     XSETFASTINT (val, XVECTOR (sequence)->size);
   else if (CHAR_TABLE_P (sequence))
-    XSETFASTINT (val, CHAR_TABLE_ORDINARY_SLOTS);
+    XSETFASTINT (val, (MIN_CHAR_COMPOSITION
+		       + (CHAR_FIELD2_MASK | CHAR_FIELD3_MASK)
+		       - 1));
   else if (BOOL_VECTOR_P (sequence))
     XSETFASTINT (val, XBOOL_VECTOR (sequence)->size);
   else if (COMPILEDP (sequence))
@@ -2059,6 +2061,20 @@ mapcar1 (leni, vals, fn, seq)
 	  vals[i] = call1 (fn, dummy);
 	}
     }
+  else if (BOOL_VECTOR_P (seq))
+    {
+      for (i = 0; i < leni; i++)
+	{
+	  int byte;
+	  byte = XBOOL_VECTOR (seq)->data[i / BITS_PER_CHAR];
+	  if (byte & (1 << (i % BITS_PER_CHAR)))
+	    dummy = Qt;
+	  else
+	    dummy = Qnil;
+
+	  vals[i] = call1 (fn, dummy);
+	}
+    }
   else if (STRINGP (seq) && ! STRING_MULTIBYTE (seq))
     {
       /* Single-byte string.  */
@@ -2100,7 +2116,8 @@ mapcar1 (leni, vals, fn, seq)
 DEFUN ("mapconcat", Fmapconcat, Smapconcat, 3, 3, 0,
   "Apply FUNCTION to each element of SEQUENCE, and concat the results as strings.\n\
 In between each pair of results, stick in SEPARATOR.  Thus, \" \" as\n\
-SEPARATOR results in spaces between the values returned by FUNCTION.")
+SEPARATOR results in spaces between the values returned by FUNCTION.\n\
+SEQUENCE may be a list, a vector, a bool-vector, or a string.")
   (function, sequence, separator)
      Lisp_Object function, sequence, separator;
 {
@@ -2134,7 +2151,7 @@ SEPARATOR results in spaces between the values returned by FUNCTION.")
 DEFUN ("mapcar", Fmapcar, Smapcar, 2, 2, 0,
   "Apply FUNCTION to each element of SEQUENCE, and make a list of the results.\n\
 The result is a list just as long as SEQUENCE.\n\
-SEQUENCE may be a list, a vector or a string.")
+SEQUENCE may be a list, a vector, a bool-vector, or a string.")
   (function, sequence)
      Lisp_Object function, sequence;
 {
-- 
2.39.2