Module | Bio::GFF::GFF2::Escape
In: | lib/bio/db/gff.rb

Private methods for GFF2 escaping characters. Internal only. Users should not use this module directly.

### Constants

UNSAFE_GFF2 | = | /[^-_.!~*'()a-zA-Z\d\/?:@+$\[\] \x80-\xfd><;=,%^&\|`]/n |  | unsafe characters to be escaped
IDENTIFIER_GFF2 | = | /\A[A-Za-z][A-Za-z0-9_]*\z/n |  | GFF2 standard identifier
NUMERIC_GFF2 | = | /\A[-+]?([0-9]+|[0-9]*\.[0-9]*)([eE][+-]?[0-9]+)?\z/n |  | GFF2 numeric value
BACKSLASH | = | { 't' => "\t", 'n' => "\n", 'r' => "\r", 'f' => "\f", 'b' => "\b", 'a' => "\a", 'e' => "\e", 'v' => "\v", # 's' => " ", }.freeze |  | List of 1-letter special backslash code. The letters other than listed here are the same as those of without backslash, except for "x" and digits. (Note that \u (unicode) is not supported.)
CHAR2BACKSLASH | = | BACKSLASH.invert.freeze |  | inverted hash of BACKSLASH
CHAR2BACKSLASH_EXTENDED | = | CHAR2BACKSLASH.merge({ '"' => '"', "\\" => "\\" }).freeze |  | inverted hash of BACKSLASH, including double quote and backslash
PROHIBITED_GFF2_COLUMNS | = | /[\t\r\n\x00-\x1f\x7f\xfe\xff]/ |  | prohibited characters in GFF2 columns
PROHIBITED_GFF2_TAGS | = | /[\s\"\;\t\r\n\x00-\x1f\x7f\xfe\xff]/ |  | prohibited characters in GFF2 attribute tags

[Validate]