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Full Discussion: SED * operator
Top Forums Shell Programming and Scripting SED * operator Post 302271136 by sinpeak on Wednesday 24th of December 2008 01:01:36 AM
Old 12-24-2008
Thanks to all for the replies.

To matrixmadhan :

Going by your reply -

"It should match zero or more characters in the character class [a-z]
it will match 'a', 'b', 'c' and not the next space character <' '> so just that part is replaced by 'X'"

I tried :-

echo "a 123 abc" | sed 's/[a-z]*/X/'
echo "ab 123 abc" | sed 's/[a-z]*/X/'
echo "abc 123 abc" | sed 's/[a-z]*/X/'

all gave the same output as : X 123 abc

From your reply and the above result I understand - "*" will always start checking from the left in the input string. If it does not find a match , 'X' is replaced at the very beginning of the input string and the job is done.

But if it does find a match , it ends trying to find another match AND 'X' is kept in place of the matched token/characters.

Would request you to please confirm/correct the above.

Thanks

Last edited by sinpeak; 12-24-2008 at 02:12 AM..
sinpeak
 

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MSGFMT_GET_PATTERN(3)							 1						     MSGFMT_GET_PATTERN(3)

MessageFormatter::getPattern - Get the pattern used by the formatter

	Object oriented style

SYNOPSIS
public string MessageFormatter::getPattern (void ) DESCRIPTION
Procedural style string msgfmt_get_pattern (MessageFormatter $fmt) Get the pattern used by the formatter PARAMETERS
o $fmt - The message formatter RETURN VALUES
The pattern string for this message formatter EXAMPLES
Example #1 msgfmt_get_pattern(3) example <?php $fmt = msgfmt_create( "en_US", "{0, number} monkeys on {1, number} trees" ); echo "Default pattern: '" . msgfmt_get_pattern( $fmt ) . "' "; echo "Formatting result: " . msgfmt_format( $fmt, array(123, 456) ) . " "; msgfmt_set_pattern( $fmt, "{0, number} trees hosting {1, number} monkeys" ); echo "New pattern: '" . msgfmt_get_pattern( $fmt ) . "' "; echo "Formatted number: " . msgfmt_format( $fmt, array(123, 456) ) . " "; ?> Example #2 OO example <?php $fmt = new MessageFormatter( "en_US", "{0, number} monkeys on {1, number} trees" ); echo "Default pattern: '" . $fmt->getPattern() . "' "; echo "Formatting result: " . $fmt->format(array(123, 456)) . " "; $fmt->setPattern("{0, number} trees hosting {1, number} monkeys" ); echo "New pattern: '" . $fmt->getPattern() . "' "; echo "Formatted number: " . $fmt->format(array(123, 456)) . " "; ?> The above example will output: Default pattern: '{0,number} monkeys on {1,number} trees' Formatting result: 123 monkeys on 456 trees New pattern: '{0,number} trees hosting {1,number} monkeys' Formatted number: 123 trees hosting 456 monkeys SEE ALSO
msgfmt_create(3), msgfmt_set_pattern(3). PHP Documentation Group MSGFMT_GET_PATTERN(3)
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