comment on

Beautiful!! I'm hoping enlightenment will follow once my mind gets over being boggled. Can you point me to some documentation that explains what the output means?

Compiling REx "exception:"
Final program:
   1: EXACT <exception:> (5)
   5: END (0)
anchored "exception:" at 0 (checking anchored isall) minlen 10
Compiling REx "\Gtex"
Final program:
   1: GPOS (2)
   2: EXACT <tex> (4)
   4: END (0)
anchored "tex" at 0 (checking anchored noscan isall) anchored(GPOS) GP
+OS:0 minlen 3
Guessing start of match in sv for REx "exception:" against "exception:
+tex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:tex"
  10 <xception:> <tex>       |  1:GPOS(2)
  10 <xception:> <tex>       |  2:EXACT <tex>(4)
  13 <xception:tex> <>       |  4:END(0)
Match successful!
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "tex:except
+ion:mex"
Found anchored substr "exception:" at offset 4...
Starting position does not contradict /^/m...
Guessed: match at offset 4
Matching REx "\Gtex" against "tex:exception:mex"
  14 <xception:> <mex>       |  1:GPOS(2)
  14 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
$VAR1 = [
          'exception:mex',
          'exception:mex',
          'tex:exception:mex',
          'exception:mex',
          'exception:mex'
        ];
Guessing start of match in sv for REx "exception:" against "exception:
+tex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:tex"
  10 <xception:> <tex>       |  1:GPOS(2)
  10 <xception:> <tex>       |  2:EXACT <tex>(4)
  13 <xception:tex> <>       |  4:END(0)
Match successful!
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "tex:except
+ion:mex"
Found anchored substr "exception:" at offset 4...
Starting position does not contradict /^/m...
Guessed: match at offset 4
Matching REx "\Gtex" against "tex:exception:mex"
  14 <xception:> <mex>       |  1:GPOS(2)
  14 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
$VAR1 = [
          'exception:mex',
          'exception:mex',
          'tex:exception:mex',
          'exception:mex',
          'exception:mex'
        ];
Guessing start of match in sv for REx "exception:" against "exception:
+tex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:tex"
  10 <xception:> <tex>       |  1:GPOS(2)
  10 <xception:> <tex>       |  2:EXACT <tex>(4)
  13 <xception:tex> <>       |  4:END(0)
Match successful!
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "tex:except
+ion:mex"
Found anchored substr "exception:" at offset 4...
Starting position does not contradict /^/m...
Guessed: match at offset 4
Matching REx "\Gtex" against "tex:exception:mex"
  14 <xception:> <mex>       |  1:GPOS(2)
  14 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
$VAR1 = [
          'exception:mex',
          'exception:mex',
          'tex:exception:mex',
          'exception:mex',
          'exception:mex'
        ];
Guessing start of match in sv for REx "exception:" against "exception:
+tex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:tex"
  10 <xception:> <tex>       |  1:GPOS(2)
  10 <xception:> <tex>       |  2:EXACT <tex>(4)
  13 <xception:tex> <>       |  4:END(0)
Match successful!
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "tex:except
+ion:mex"
Found anchored substr "exception:" at offset 4...
Starting position does not contradict /^/m...
Guessed: match at offset 4
Matching REx "\Gtex" against "tex:exception:mex"
  14 <xception:> <mex>       |  1:GPOS(2)
  14 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
Guessing start of match in sv for REx "exception:" against "exception:
+mex"
Found anchored substr "exception:" at offset 0...
Guessed: match at offset 0
Matching REx "\Gtex" against "exception:mex"
  10 <xception:> <mex>       |  1:GPOS(2)
  10 <xception:> <mex>       |  2:EXACT <tex>(4)
                                  failed...
Match failed
$VAR1 = [
          'exception:mex',
          'exception:mex',
          'tex:exception:mex',
          'exception:mex',
          'exception:mex'
        ];
Freeing REx: "exception:"
Freeing REx: "\Gtex"
[download]

In reply to Re^2: strange behavior of grep with global match by ig
in thread strange behavior of grep with global match [resolved] by ig

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