doc: improve PG 12 to_timestamp()/to_date() wording

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index c98f9666f7a2e7b3fb667b4e104ebce58be05ba4..d7517660044a7b756470f4c502d2c35d8bb78cd5 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -6388,7 +6388,7 @@ SELECT regexp_match('abc01234xyz', '(?:(.*?)(\d+)(.*)){1,1}');
 
      
       
-       A separator (a space or a non-letter/non-digit character) in the template string of
+       A separator (a space or non-letter/non-digit character) in the template string of
        to_timestamp and to_date
        matches any single separator in the input string or is skipped,
        unless the FX option is used.
@@ -6399,22 +6399,22 @@ SELECT regexp_match('abc01234xyz', '(?:(.*?)(\d+)(.*)){1,1}');
        exceeds the number of separators in the template.
       
       
-       If FX is specified, separator in template string
-       matches to exactly one character in input string.  Notice we don't insist
-       input string character to be the same as template string separator.
+       If FX is specified, a separator in the template string
+       matches exactly one character in input string.  Notice we don't insist the
+       input string character be the same as the template string separator.
        For example, to_timestamp('2000/JUN', 'FXYYYY MON')
        works, but to_timestamp('2000/JUN', 'FXYYYY  MON')
-       returns an error because a space second template string space consumed
-       letter J from the input string.
+       returns an error because the second template string space is consumed
+       by the letter J in the input string.
       
      
 
      
       
-       TZH template pattern can match a signed number.
-       Without the FX option, it may lead to ambiguity in
+       A TZH template pattern can match a signed number.
+       Without the FX option, it can lead to ambiguity in
        interpretation of the minus sign, which can also be interpreted as a separator.
-       This ambiguity is resolved as follows.  If the number of separators before
+       This ambiguity is resolved as follows:  If the number of separators before
        TZH in the template string is less than the number of
        separators before the minus sign in the input string, the minus sign
        is interpreted as part of TZH.