Help:Expansion depth/demo

From Meta, a Wikimedia project coordination wiki
Jump to navigation Jump to search

Forty levels of nesting are expanded in MediaWiki software. The forty-first level exceeds the expansion depth level and causes an error in its place.

Three templates are used in the demonstration. This template also includes itself to produce the second half of the page.

Template Code Comment
1x {{{1}}} Expand parameter one. A variable template.
Tc in Constant template always returns "in".
Xpdt/3

#if: 0 {{#if:x|1 {{#if:x|2 {{#if:x|3 {{{1}}} 3}} 2}} 1}}

1x: 0 {{1x|1 {{1x|2 {{1x|3 {{{1}}} 3}} 2}} 1}}

Expansion adds three levels of nesting plus any levels in the parameter, before it subtracts three levels plus any levels in the parameter. Its numbers are output in blue and marked by #if: for the parser function part and 1x: for the template.

In the output every number in the sequence except zero represents a change in nesting level. Each section is reduced to level zero.

40 times 1x[edit]

0 {{1x|1 {{1x|2 {{1x|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{1x|21 {{1x|22 {{1x|23 {{1x|24 {{1x|25 {{1x|26 {{1x|27 {{1x|28 {{1x|29 {{1x|30 {{1x|31 {{1x|32 {{1x|33 {{1x|34 {{1x|35 {{1x|36 {{1x|37 {{1x|38 {{1x|39 {{1x|40 {{tc|1}} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 {{Expansion depth limit exceeded|21 {{Expansion depth limit exceeded|22 {{Expansion depth limit exceeded|23 {{Expansion depth limit exceeded|24 {{Expansion depth limit exceeded|25 {{Expansion depth limit exceeded|26 {{Expansion depth limit exceeded|27 {{Expansion depth limit exceeded|28 {{Expansion depth limit exceeded|29 {{Expansion depth limit exceeded|30 {{Expansion depth limit exceeded|31 {{Expansion depth limit exceeded|32 {{Expansion depth limit exceeded|33 {{Expansion depth limit exceeded|34 {{Expansion depth limit exceeded|35 {{Expansion depth limit exceeded|36 {{Expansion depth limit exceeded|37 {{Expansion depth limit exceeded|38 {{Expansion depth limit exceeded|39 {{Expansion depth limit exceeded|40 {{Expansion depth limit exceeded|1}} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} 0

38 times 1x, 2 times #if[edit]

0 {{#if|1 {{#if|2 {{1x|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{1x|21 {{1x|22 {{1x|23 {{1x|24 {{1x|25 {{1x|26 {{1x|27 {{1x|28 {{1x|29 {{1x|30 {{1x|31 {{1x|32 {{1x|33 {{1x|34 {{1x|35 {{1x|36 {{1x|37 {{1x|38 {{1x|39 {{1x|40 {{tc|1}} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 {{Expansion depth limit exceeded|22 {{Expansion depth limit exceeded|23 {{Expansion depth limit exceeded|24 {{Expansion depth limit exceeded|25 {{Expansion depth limit exceeded|26 {{Expansion depth limit exceeded|27 {{Expansion depth limit exceeded|28 {{Expansion depth limit exceeded|29 {{Expansion depth limit exceeded|30 {{Expansion depth limit exceeded|31 {{Expansion depth limit exceeded|32 {{Expansion depth limit exceeded|33 {{Expansion depth limit exceeded|34 {{Expansion depth limit exceeded|35 {{Expansion depth limit exceeded|36 {{Expansion depth limit exceeded|37 {{Expansion depth limit exceeded|38 {{Expansion depth limit exceeded|39 {{Expansion depth limit exceeded|40 {{Expansion depth limit exceeded|1}} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} 0

35 times 1x, 5 times #if[edit]

0 {{#if:x|1 {{#if:x|2 {{1x|3 {{1x|4 {{#if:x|5 {{1x|6 {{1x|7 {{#if:x|8 {{#if:x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{1x|21 {{1x|22 {{1x|23 {{1x|24 {{1x|25 {{1x|26 {{1x|27 {{1x|28 {{1x|29 {{1x|30 {{1x|31 {{1x|32 {{1x|33 {{1x|34 {{1x|35 {{1x|36 {{1x|37 {{1x|38 {{1x|39 {{1x|40 {{tc|1}} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 {{{Expansion depth limit exceeded}}} 0

Xpdt/3 at nesting level 3[edit]

0 {{1x|1 {{1x|2 {{xpdt/3|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{1x|21 {{1x|22 {{1x|23 {{1x|24 {{1x|25 {{1x|26 {{1x|27 {{1x|28 {{1x|29 {{1x|30 {{1x|31 {{1x|32 {{1x|33 {{1x|34 {{1x|35 {{1x|36 {{1x|37 {{1x|38 {{1x|39 {{1x|40 {{tc|1}} 40}} 39}} 38}} 37}} 36}} 35}} 34}} 33}} 32}} 31}} 30}} 29}} 28}} 27}} 26}} 25}} 24}} 23}} 22}} 21}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2

1x: 0 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 {{Expansion depth limit exceeded|18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|21 {{Expansion depth limit exceeded|22 {{Expansion depth limit exceeded|23 {{Expansion depth limit exceeded|24 {{Expansion depth limit exceeded|25 {{Expansion depth limit exceeded|26 {{Expansion depth limit exceeded|27 {{Expansion depth limit exceeded|28 {{Expansion depth limit exceeded|29 {{Expansion depth limit exceeded|30 {{Expansion depth limit exceeded|31 {{Expansion depth limit exceeded|32 {{Expansion depth limit exceeded|33 {{Expansion depth limit exceeded|34 {{Expansion depth limit exceeded|35 {{Expansion depth limit exceeded|36 {{Expansion depth limit exceeded|37 {{Expansion depth limit exceeded|38 {{Expansion depth limit exceeded|39 {{Expansion depth limit exceeded|40 {{Expansion depth limit exceeded|1}} 40}} 39}} 38}} 37}} 36}} 35}} 34}} 33}} 32}} 31}} 30}} 29}} 28}} 27}} 26}} 25}} 24}} 23}} 22}} 21}} 20}} 19}} 18}} 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 3 2 1 0

#if: 0 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 {{Expansion depth limit exceeded|18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|21 {{Expansion depth limit exceeded|22 {{Expansion depth limit exceeded|23 {{Expansion depth limit exceeded|24 {{Expansion depth limit exceeded|25 {{Expansion depth limit exceeded|26 {{Expansion depth limit exceeded|27 {{Expansion depth limit exceeded|28 {{Expansion depth limit exceeded|29 {{Expansion depth limit exceeded|30 {{Expansion depth limit exceeded|31 {{Expansion depth limit exceeded|32 {{Expansion depth limit exceeded|33 {{Expansion depth limit exceeded|34 {{Expansion depth limit exceeded|35 {{Expansion depth limit exceeded|36 {{Expansion depth limit exceeded|37 {{Expansion depth limit exceeded|38 {{Expansion depth limit exceeded|39 {{Expansion depth limit exceeded|40 {{Expansion depth limit exceeded|1}} 40}} 39}} 38}} 37}} 36}} 35}} 34}} 33}} 32}} 31}} 30}} 29}} 28}} 27}} 26}} 25}} 24}} 23}} 22}} 21}} 20}} 19}} 18}} 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 3 2 1 0 2 1 0

At 1x|4 the nesting level is 7. At 1x|37 the nesting level is 40.

Xpdt/3 at nesting level 17[edit]

0 {{1x|1 {{1x|2 {{1x|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{xpdt/3|17 {{1x|18 {{1x|19 {{1x|20 {{tc|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1x: 0 1 2 3 17 {{Expansion depth limit exceeded|18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|1}} 20}} 19}} 18}} 17 3 2 1 0

#if: 0 1 2 3 17 {{Expansion depth limit exceeded|18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|1}} 20}} 19}} 18}} 17 3 2 1 0 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Xpdt/3 at nesting level 18[edit]

0 {{1x|1 {{1x|2 {{1x|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{xpdt/3|18 {{1x|19 {{1x|20 {{tc|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

1x: 0 1 2 {{{Expansion depth limit exceeded}}} 2 1 0

#if: 0 1 2 3 18 {{{Expansion depth limit exceeded}}} 18 3 2 1 0 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Xpdt/3 at nesting level 3, with recursion at 5[edit]

0 {{1x|1 {{1x|2 {{xpdt/3|3 {{1x|4 {{xpdt/3|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{tc|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2

1x: 0 1 2 3 3 4

1x: 0 1 2 3 5 6 7 8 9 10 11 12 13 14 {{Expansion depth limit exceeded|15 {{Expansion depth limit exceeded|16 {{Expansion depth limit exceeded|17 {{Expansion depth limit exceeded|18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14 13 12 11 10 9 8 7 6 5 3 2 1 0

#if: 0 1 2 3 5 6 7 8 9 10 11 12 13 14 {{Expansion depth limit exceeded|15 {{Expansion depth limit exceeded|16 {{Expansion depth limit exceeded|17 {{Expansion depth limit exceeded|18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14 13 12 11 10 9 8 7 6 5 3 2 1 0 4 3 3 2 1 0

#if: 0 1 2 3 3 4

1x: 0 1 2 3 5 6 7 8 9 10 11 12 13 14 {{Expansion depth limit exceeded|15 {{Expansion depth limit exceeded|16 {{Expansion depth limit exceeded|17 {{Expansion depth limit exceeded|18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14 13 12 11 10 9 8 7 6 5 3 2 1 0

#if: 0 1 2 3 5 6 7 8 9 10 11 12 13 14 {{Expansion depth limit exceeded|15 {{Expansion depth limit exceeded|16 {{Expansion depth limit exceeded|17 {{Expansion depth limit exceeded|18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14 13 12 11 10 9 8 7 6 5 3 2 1 0 4 3 3 2 1 0 2 1 0

Xpdt/3 at nesting level 3, with recursion at 16[edit]

0 {{1x|1 {{1x|2 {{xpdt/3|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{xpdt/3|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{tc|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2

1x: 0 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15

1x: 0 1 {{{Expansion depth limit exceeded}}} 1 0

#if: 0 1 2 3 {{{Expansion depth limit exceeded}}} 3 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 3 2 1 0

#if: 0 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15

1x: 0 1 {{{Expansion depth limit exceeded}}} 1 0

#if: 0 1 2 3 {{{Expansion depth limit exceeded}}} 3 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 3 2 1 0 2 1 0

This page calling itself[edit]

{{Help:Expansion depth/demo}}

Forty levels of nesting are expanded in MediaWiki software. The forty-first level exceeds the expansion depth level and causes an error in its place.

Three templates are used in the demonstration. This template also includes itself to produce the second half of the page.

Template Code Comment
1x {{{1}}} Expand parameter one. A variable template.
Tc in Constant template always returns "in".
Xpdt/3

#if: 0 {{#if:x|1 {{#if:x|2 {{#if:x|3 {{{1}}} 3}} 2}} 1}}

1x: 0 {{1x|1 {{1x|2 {{1x|3 {{{1}}} 3}} 2}} 1}}

Expansion adds three levels of nesting plus any levels in the parameter, before it subtracts three levels plus any levels in the parameter. Its numbers are output in blue and marked by #if: for the parser function part and 1x: for the template.

In the output every number in the sequence except zero represents a change in nesting level. Each section is reduced to level zero.

40 times 1x[edit]

0 {{1x|1 {{1x|2 {{1x|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{1x|21 {{1x|22 {{1x|23 {{1x|24 {{1x|25 {{1x|26 {{1x|27 {{1x|28 {{1x|29 {{1x|30 {{1x|31 {{1x|32 {{1x|33 {{1x|34 {{1x|35 {{1x|36 {{1x|37 {{1x|38 {{1x|39 {{1x|40 {{tc|1}} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 {{{Expansion depth limit exceeded}}} 0

38 times 1x, 2 times #if[edit]

0 {{#if|1 {{#if|2 {{1x|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{1x|21 {{1x|22 {{1x|23 {{1x|24 {{1x|25 {{1x|26 {{1x|27 {{1x|28 {{1x|29 {{1x|30 {{1x|31 {{1x|32 {{1x|33 {{1x|34 {{1x|35 {{1x|36 {{1x|37 {{1x|38 {{1x|39 {{1x|40 {{tc|1}} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 {{{Expansion depth limit exceeded}}} 0

35 times 1x, 5 times #if[edit]

0 {{#if:x|1 {{#if:x|2 {{1x|3 {{1x|4 {{#if:x|5 {{1x|6 {{1x|7 {{#if:x|8 {{#if:x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{1x|21 {{1x|22 {{1x|23 {{1x|24 {{1x|25 {{1x|26 {{1x|27 {{1x|28 {{1x|29 {{1x|30 {{1x|31 {{1x|32 {{1x|33 {{1x|34 {{1x|35 {{1x|36 {{1x|37 {{1x|38 {{1x|39 {{1x|40 {{tc|1}} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 {{Expansion depth limit exceeded|23 {{Expansion depth limit exceeded|24 {{Expansion depth limit exceeded|25 {{Expansion depth limit exceeded|26 {{Expansion depth limit exceeded|27 {{Expansion depth limit exceeded|28 {{Expansion depth limit exceeded|29 {{Expansion depth limit exceeded|30 {{Expansion depth limit exceeded|31 {{Expansion depth limit exceeded|32 {{Expansion depth limit exceeded|33 {{Expansion depth limit exceeded|34 {{Expansion depth limit exceeded|35 {{Expansion depth limit exceeded|36 {{Expansion depth limit exceeded|37 {{Expansion depth limit exceeded|38 {{Expansion depth limit exceeded|39 {{Expansion depth limit exceeded|40 {{Expansion depth limit exceeded|1}} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} 0

Xpdt/3 at nesting level 3[edit]

0 {{1x|1 {{1x|2 {{xpdt/3|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{1x|21 {{1x|22 {{1x|23 {{1x|24 {{1x|25 {{1x|26 {{1x|27 {{1x|28 {{1x|29 {{1x|30 {{1x|31 {{1x|32 {{1x|33 {{1x|34 {{1x|35 {{1x|36 {{1x|37 {{1x|38 {{1x|39 {{1x|40 {{tc|1}} 40}} 39}} 38}} 37}} 36}} 35}} 34}} 33}} 32}} 31}} 30}} 29}} 28}} 27}} 26}} 25}} 24}} 23}} 22}} 21}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2

1x: 0 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 {{{Expansion depth limit exceeded}}} 16 15 14 13 12 11 10 9 8 7 6 5 4 3 3 2 1 0

#if: 0 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 {{{Expansion depth limit exceeded}}} 16 15 14 13 12 11 10 9 8 7 6 5 4 3 3 2 1 0 2 1 0

At 1x|4 the nesting level is 7. At 1x|37 the nesting level is 40.

Xpdt/3 at nesting level 17[edit]

0 {{1x|1 {{1x|2 {{1x|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{xpdt/3|17 {{1x|18 {{1x|19 {{1x|20 {{tc|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1x: 0 1 2 3 {{{Expansion depth limit exceeded}}} 3 2 1 0

#if: 0 1 2 3 17 18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|1}} 20}} 19}} 18 17 3 2 1 0 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Xpdt/3 at nesting level 18[edit]

0 {{1x|1 {{1x|2 {{1x|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{xpdt/3|18 {{1x|19 {{1x|20 {{tc|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

1x: 0 1 2 {{Expansion depth limit exceeded|3 {{{Expansion depth limit exceeded}}} 3}} 2 1 0

#if: 0 1 2 3 18 {{Expansion depth limit exceeded|19 {{Expansion depth limit exceeded|20 {{Expansion depth limit exceeded|1}} 20}} 19}} 18 3 2 1 0 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Xpdt/3 at nesting level 3, with recursion at 5[edit]

0 {{1x|1 {{1x|2 {{xpdt/3|3 {{1x|4 {{xpdt/3|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{1x|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{tc|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2

1x: 0 1 2 3 3 4

1x: 0 1 2 3 5 6 7 8 9 10 11 12 13 {{{Expansion depth limit exceeded}}} 13 12 11 10 9 8 7 6 5 3 2 1 0

#if: 0 1 2 3 5 6 7 8 9 10 11 12 13 {{{Expansion depth limit exceeded}}} 13 12 11 10 9 8 7 6 5 3 2 1 0 4 3 3 2 1 0

#if: 0 1 2 3 3 4

1x: 0 1 2 3 5 6 7 8 9 10 11 12 13 {{{Expansion depth limit exceeded}}} 13 12 11 10 9 8 7 6 5 3 2 1 0

#if: 0 1 2 3 5 6 7 8 9 10 11 12 13 {{{Expansion depth limit exceeded}}} 13 12 11 10 9 8 7 6 5 3 2 1 0 4 3 3 2 1 0 2 1 0

Xpdt/3 at nesting level 3, with recursion at 16[edit]

0 {{1x|1 {{1x|2 {{xpdt/3|3 {{1x|4 {{1x|5 {{1x|6 {{1x|7 {{1x|8 {{1x|9 {{1x|10 {{1x|11 {{1x|12 {{1x|13 {{1x|14 {{1x|15 {{xpdt/3|16 {{1x|17 {{1x|18 {{1x|19 {{1x|20 {{tc|1}} 20}} 19}} 18}} 17}} 16}} 15}} 14}} 13}} 12}} 11}} 10}} 9}} 8}} 7}} 6}} 5}} 4}} 3}} 2}} 1}} 0

0 1 2

1x: 0 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15

1x: 0 1 {{Expansion depth limit exceeded|2 {{Expansion depth limit exceeded|3 {{{Expansion depth limit exceeded}}} 3}} 2}} 1 0

#if: 0 1 2 {{Expansion depth limit exceeded|3 {{{Expansion depth limit exceeded}}} 3}} 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 3 2 1 0

#if: 0 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15

1x: 0 1 {{Expansion depth limit exceeded|2 {{Expansion depth limit exceeded|3 {{{Expansion depth limit exceeded}}} 3}} 2}} 1 0

#if: 0 1 2 {{Expansion depth limit exceeded|3 {{{Expansion depth limit exceeded}}} 3}} 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 3 2 1 0 2 1 0

This page calling itself[edit]

{{Help:Expansion depth/demo}}