(usage): Mention white space vs -b and -t options.

From The Wanderer.

diff --git a/src/sort.c b/src/sort.c
index 7de1a41..8dc3f9c 100644 (file)
--- a/src/sort.c
+++ b/src/sort.c
@@ -331,9 +331,10 @@ Other options:\n\
       fputs (_("\
 \n\
 POS is F[.C][OPTS], where F is the field number and C the character position\n\
-in the field.  OPTS is one or more single-letter ordering options, which\n\
-override global ordering options for that key.  If no key is given, use the\n\
-entire line as the key.\n\
+in the field.  If neither the -t nor the -b option is in effect, the characters\n\
+in a field are counted from the beginning of the preceding whitespace.  OPTS is\n\
+one or more single-letter ordering options, which override global ordering\n\
+options for that key.  If no key is given, use the entire line as the key.\n\
 \n\
 SIZE may be followed by the following multiplicative suffixes:\n\
 "), stdout);