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patch 8.2.0886: cannot use octal numbers in scriptversion 4

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Problem:    Cannot use octal numbers in scriptversion 4.
Solution:   Add the "0o" notation. (Ken Takata, closes #5304)
This commit is contained in:
Bram Moolenaar
2020-06-02 21:38:22 +02:00
parent 3ac498c8a1
commit c17e66c5c0
7 changed files with 48 additions and 20 deletions
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27
runtime/doc/eval.txt
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@@ -95,15 +95,17 @@ the Number. Examples:
Number -1 --> String "-1" ~
*octal*
Conversion from a String to a Number is done by converting the first digits to
a number. Hexadecimal "0xf9", Octal "017", and Binary "0b10" numbers are
recognized (NOTE: when using |scriptversion-4| octal is not recognized). If
the String doesn't start with digits, the result is zero.
a number. Hexadecimal "0xf9", Octal "017" or "0o17", and Binary "0b10"
numbers are recognized (NOTE: when using |scriptversion-4| octal with a
leading "0" is not recognized). If the String doesn't start with digits, the
result is zero.
Examples:
String "456" --> Number 456 ~
String "6bar" --> Number 6 ~
String "foo" --> Number 0 ~
String "0xf1" --> Number 241 ~
String "0100" --> Number 64 ~
String "0o100" --> Number 64 ~
String "0b101" --> Number 5 ~
String "-8" --> Number -8 ~
String "+8" --> Number 0 ~
@@ -1264,7 +1266,7 @@ number number constant *expr-number*
*hex-number* *octal-number* *binary-number*
Decimal, Hexadecimal (starting with 0x or 0X), Binary (starting with 0b or 0B)
and Octal (starting with 0).
and Octal (starting with 0, 0o or 0O).
*floating-point-format*
Floating point numbers can be written in two forms:
@@ -9642,8 +9644,8 @@ str2nr({expr} [, {base} [, {quoted}]]) *str2nr()*
<
When {base} is 16 a leading "0x" or "0X" is ignored. With a
different base the result will be zero. Similarly, when
{base} is 8 a leading "0" is ignored, and when {base} is 2 a
leading "0b" or "0B" is ignored.
{base} is 8 a leading "0", "0o" or "0O" is ignored, and when
{base} is 2 a leading "0b" or "0B" is ignored.
Text after the number is silently ignored.
Can also be used as a |method|: >
@@ -13593,13 +13595,16 @@ instead of failing in mysterious ways.
<
*scriptversion-4* >
:scriptversion 4
< Numbers with a leading zero are not recognized as octal. With the
< Numbers with a leading zero are not recognized as octal. "0o" or "0O"
is still recognized as octal. With the
previous version you get: >
echo 017 " displays 15
echo 018 " displays 18
echo 017 " displays 15 (octal)
echo 0o17 " displays 15 (octal)
echo 018 " displays 18 (decimal)
< with script version 4: >
echo 017 " displays 17
echo 018 " displays 18
echo 017 " displays 17 (decimal)
echo 0o17 " displays 15 (octal)
echo 018 " displays 18 (decimal)
< Also, it is possible to use single quotes inside numbers to make them
easier to read: >
echo 1'000'000