/usr/lib/pd/extra/list-abs/list-nth-help.pd is in pd-list-abs 0.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | #N canvas 0 31 624 592 10;
#X floatatom 268 339 5 0 0 1 n - -;
#X text 136 110 Inlets: 1) list to look up in;
#X text 134 38 look up the nth element in a list. n has to be positive
and is zero-based!;
#X obj 56 493 list-idx;
#X text 53 472 Also see:;
#X obj 215 392 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144
-1 -1;
#X obj 56 38 list-nth;
#X text 193 129 2) number giving position to filter. Zero-based \,
positive.;
#X msg 201 238 0 1 2 3 4 5 6;
#X text 138 83 Argument: <n \, default: 0==first element>;
#X msg 223 300 a b c d e;
#X obj 201 425 prepent set;
#X msg 201 448;
#X msg 149 395 bang;
#X msg 218 266 list x y z;
#X obj 201 364 list-nth 2;
#X text 310 301 non-lists get converted to proper lists.;
#X text 134 162 Note: negative postion numbers give no output \, lists
longer than the index give a spurious 0 as result \, but also an error
in the console: "$x: argument out of range".;
#X text 53 520 [list-idx] is more flexible \, but a bit slower.;
#N canvas 506 181 494 396 META 0;
#X text 12 25 LICENSE SIBSD;
#X text 12 105 AUTHOR Frank Barknecht;
#X text 12 125 HELP_PATCH_AUTHORS Frank Barknecht. "pd meta" information
added by Jonathan Wilkes for Pd version 0.42.;
#X text 12 5 KEYWORDS control list_op;
#X text 12 45 DESCRIPTION look up the nth element in a list;
#X text 12 65 INLET_0 anything;
#X text 12 85 OUTLET_0 float symbol pointer;
#X restore 538 539 pd META;
#X connect 0 0 15 1;
#X connect 8 0 15 0;
#X connect 10 0 15 0;
#X connect 11 0 12 0;
#X connect 13 0 11 0;
#X connect 14 0 15 0;
#X connect 15 0 5 0;
#X connect 15 0 11 0;
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