Escapes the special characters '\b', '\f', '\n', '\r', '\t', '\v', '\'
and '"' in the string source by inserting a '\' before
them. Additionally all characters in the range 0x01-0x1F (everything
below SPACE) and in the range 0x7F-0xFF (all non-ASCII chars) are
replaced with a '\' followed by their octal representation.
Characters supplied in exceptions are not escaped.
Escapes the special characters '\b', '\f', '\n', '\r', '\t', '\v', '\' and '"' in the string source by inserting a '\' before them. Additionally all characters in the range 0x01-0x1F (everything below SPACE) and in the range 0x7F-0xFF (all non-ASCII chars) are replaced with a '\' followed by their octal representation. Characters supplied in exceptions are not escaped.
g_strcompress() does the reverse conversion.