Info Catalog coreutils: Punctuation Characters vs letters coreutils: Implementation Details coreutils: Version sort ignores locale

coreutils: Tilde ~ character

 
 30.2.5 Tilde ‘~’ character
 --------------------------
 
 Rule 2.2.2 dictates that tilde character ‘‘~’’ (ASCII 126) sorts before
 all other non-digit characters, including an empty part.
 
      $ cat input7
      1
      1%
      1.2
      1~
      ~
 
      $ sort -V input7
      ~
      1~
      1
      1%
      1.2
 
    The sorting algorithm starts by breaking down the string into
 non-digits (rule 2) and digits parts (rule 3).
 
    In the above input file, only the last line in the input file starts
 with a non-digit (‘‘~’’).  This is the first part.  All other lines in
 the input file start with a digit - their first non-digit part is empty.
 
    Based on rule 2.2.2, tilde ‘‘~’’ sorts before all other non-digits
 including the empty part - hence it comes before all other strings, and
 is listed first in the sorted output.
 
    The remaining lines (‘1’, ‘1%’, ‘1.2’, ‘1~’) follow similar logic:
 The digit part is extracted (1 for all strings) and compares identical.
 The following extracted parts for the remaining input lines are: empty
 part, ‘%’, ‘.’, ‘~’.
 
    Tilde sorts before all others, hence the line ‘1~’ appears next.
 
    The remaining lines (‘1’, ‘1%’, ‘1.2’) are sorted based on previously
 explained rules.
 

Info Catalog coreutils: Punctuation Characters vs letters coreutils: Implementation Details coreutils: Version sort ignores locale