csh, pattern matching in if() condition.


 
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Old 04-03-2010
csh, pattern matching in if() condition.

Hi:

I am struggling to get the simplest pattern matching to work, in csh.

In this line:
if ("$MY" =~ /my/) echo match

it seems that I just can not make it to match, even when $MY is "mymymy".

Thanks.

N.B Phil

---------- Post updated at 11:23 PM ---------- Previous update was at 05:58 PM ----------

figured it out.

use "*" and do NOT put it inside any quote.

so this works:

if ($my =~ *my) echo match, or if($my =~ *"my") echo my

but this do not work:

if($my =~ "*my") echo match, nor this if($my =~ "my") echo match.

Thanks.
 
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Tcl_StringMatch(3)					      Tcl Library Procedures						Tcl_StringMatch(3)

__________________________________________________________________________________________________________________________________________________

NAME
Tcl_StringMatch, Tcl_StringCaseMatch - test whether a string matches a pattern SYNOPSIS
#include <tcl.h> int Tcl_StringMatch(str, pattern) int Tcl_StringCaseMatch(str, pattern, flags) ARGUMENTS
const char *str (in) String to test. const char *pattern (in) Pattern to match against string. May contain special characters from the set *?[]. int flags (in) OR-ed combination of match flags, currently only TCL_MATCH_NOCASE. 0 specifies a case-sensitive search. _________________________________________________________________ DESCRIPTION
This utility procedure determines whether a string matches a given pattern. If it does, then Tcl_StringMatch returns 1. Otherwise Tcl_StringMatch returns 0. The algorithm used for matching is the same algorithm used in the string match Tcl command and is similar to the algorithm used by the C-shell for file name matching; see the Tcl manual entry for details. In Tcl_StringCaseMatch, the algorithm is the same, but you have the option to make the matching case-insensitive. If you choose this (by passing TCL_MATCH_NOCASE), then the string and pattern are essentially matched in the lower case. KEYWORDS
match, pattern, string Tcl 8.5 Tcl_StringMatch(3)