Regular expression to match any character being repeated more than 10 times

Question

I m looking for a simple regular expression to match the same character being repeated more than 10 or so times  So for example  if I have a document littered with horizontal lines                                                       It will match the line of   characters because it is repeated more than 10 times  Note that I d like this to work for any character

User · Answer

use the  10   operator      cat  gt  testre                                                    grep -E    10    testre

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A slightly more generic powershell example   In powershell 7  the match is highlighted including the last space  can you highlight in stack      a b c d e f     select-string    a-f    6     a b c d e f

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The regex you need is      1 9      Test     perl use warnings  use strict  my  regex   qr     1 9     print  NO  if  abcdefghijklmno      regex  print  YES  if  ------------------------      regex  print  YES  if                                regex    Here the  1 is called a backreference  It references what is captured by the dot    between the brackets     and then the  9   asks for nine or more of the same character  Thus this matches ten or more of any single character   Although the above test script is in Perl  this is very standard regex syntax and should work in any language  In some variants you might need to use more backslashes  e g  Emacs would make you write       1  9    here   If a whole string should consist of 9 or more identical characters  add anchors around the pattern   my  regex   qr      1 9

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matches any character  Used in conjunction with the curly braces already mentioned      cat  gt  test                                       oo ooooooooooooooooooooooo      grep -E      1 10   test                              ooooooooooooooooooooooo

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In Python you can use     1 9         makes group from one char  any char   1 9   matches nine or more characters from 1st group   example   txt      1  aaaaaaaaaaaaaaa 2  bb 3  cccccccccccccccccccc 4  dd 5  eeeeeeeeeeee    rx   re compile r     1 9     lines   txt split   n   for line in lines      rxx   rx search line      if rxx          print line   Output   1  aaaaaaaaaaaaaaa 3  cccccccccccccccccccc 5  eeeeeeeeeeee

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10     matches   that  is repeated 10 or more times

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PHP s preg replace example    str    motttherbb fffaaattther    str   preg replace     a-z    1         str   echo  str    Here  a-z  hits the character     then allows it to be used with   1 backreference which tries to match another same character  note this is targetting 2 consecutive characters already   thus      mother father   If you did    str   preg replace     a-z    1 2          str     that would be erasing 3 consecutive repeated characters  outputting      moherbb her

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You can also use PowerShell to quickly replace words or character reptitions  PowerShell is for Windows  Current version is 3 0    oldfile     env windir WindowsUpdate log    newfile     env temp newfile txt   text    Get-Content -Path  oldfile -ReadCount 0  -join   n    text -replace       1 9            Set-Content -Path  newfile

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On some apps you need to remove the slashes to make it work         1 9      or this       1 9

[regex] Regular expression to match any character being repeated more than 10 times

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