On 2019/12/12 13:01, Ilkka Virta wrote:
On 12.12. 21:43, L A Walsh wrote:
On 2019/12/06 14:14, Chet Ramey wrote:
Seems very hard to print out that backquote though. Closest I got
was bash converting it to "''":
The backquote is in [6], and the backslash disappears, you just get the
pair of quotes in [2] because that's how printf %q outputs an empty string.
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I'm sorry, but you are mistaken.
The characters from 'Z' (0x5A) through 'z' (0x61) are:
0x5A 0x5B 0x5C 0x5D 0x5E 0x5F 0x60 0x61
Z [ \ ] ^ _ ` a
the backslash comes between the two square brackets.
Position [6] is the "Grave Accent" (or backquote).
It is quoted properly.
As for %q printing an empty string for 0x5C
"%q" causes printf to output the corresponding argument in a
format that can be reused as shell input.
For that string to be empty would mean there is no character at hex
value 0x5C (unicode U+005C), which isn't so.
read -r -a a< <(printf "%q " {Z..a})
my -p a
declare -a a=([0]="Z" [1]="\\[" [2]="''" [3]="\\]" [4]="\\^" [5]="_"
[6]="\\\`" [7]="a")
