textutil::trim - Procedures to trim strings

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       Text processing

tcllib                                                 0.8                                  textutil::trim(3tcl)

       The package textutil::trim provides commands that trim strings using arbitrary regular expressions.

       The complete set of procedures is described below.

       ::textutil::trim::trimstring ?regexp?
              Remove in string any leading and trailing substring according to the regular expression regexp and
              return  the  result  as  a  new  string.   This  is  done for all lines in the string, that is any
              substring between 2 newline chars, or between the beginning  of  the  string  and  a  newline,  or
              between  a  newline  and  the end of the string, or, if the string contain no newline, between the
              beginning and the end of the string.  The regular expression regexp defaults to "[ \\t]+".

       ::textutil::trim::trimleftstring ?regexp?
              Remove in string any leading substring according to the regular expression regexp and  return  the
              result  as  a  new  string.  This apply on any line in the string, that is any substring between 2
              newline chars, or between the beginning of the string and a newline, or between a newline and  the
              end  of the string, or, if the string contain no newline, between the beginning and the end of the
              string.  The regular expression regexp defaults to "[ \\t]+".

       ::textutil::trim::trimrightstring ?regexp?
              Remove in string any trailing substring according to the regular expression regexp and return  the
              result  as  a  new  string.  This apply on any line in the string, that is any substring between 2
              newline chars, or between the beginning of the string and a newline, or between a newline and  the
              end  of the string, or, if the string contain no newline, between the beginning and the end of the
              string.  The regular expression regexp defaults to "[ \\t]+".

       ::textutil::trim::trimPrefixstringprefix
              Removes the prefix from the beginning of string  and  returns  the  result.  The  string  is  left
              unchanged if it doesn't have prefix at its beginning.

       ::textutil::trim::trimEmptyHeadingstring
              Looks  for  empty  lines  (including  lines consisting of only whitespace) at the beginning of the
              string and removes it. The modified string is returned as the result of the command.

       prefix, regular expression, string, trimming

       textutil::trim - Procedures to trim strings

regexp(3tcl), split(3tcl), string(3tcl)

       package require Tcl8.59

       package require textutil::trim?0.8?::textutil::trim::trimstring ?regexp?

       ::textutil::trim::trimleftstring ?regexp?

       ::textutil::trim::trimrightstring ?regexp?

       ::textutil::trim::trimPrefixstringprefix::textutil::trim::trimEmptyHeadingstring

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