Template:Gaps/doc

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Template:Gaps outputs its unnamed arguments in order, applying the margin-left: 0.25em CSS rule to all but the first, so that there will be gaps of 0.25em between the arguments. The whole output has the white-space: nowrap rule so that it will not be broken across several lines.

It supports up to twenty unnamed arguments. In addition, it supports the base and e arguments which can be used for numbers in exponential notation. The base will be assumed to be 10 unless otherwise specified; a hyphen-minus "-" in the exponent will be automatically substituted by a minus sign "−". It also supports the arguments lhs and u for putting left-hand sides and units within the non-breaking span (see examples below).

See Wikipedia:Manual of Style (dates and numbers)#Large numbers and Wikipedia:Manual of Style (dates and numbers)#Decimal points for information about where to put the gaps in numbers.

Usage

Input	Output
`{{gaps\|−2.002\|319\|304\|3622(15)}}`	{{{lhs}}} = }}−2.002{{#if:319\|319}}{{#if:304\|304}}{{#if:3622(15)\|3622(15)}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}}
`{{gaps\|299\|792\|458\|u=m/s}}`	{{{lhs}}} = }}299{{#if:792\|792}}{{#if:458\|458}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:m/s\| m/s}}
`{{gaps\|lhs=π\|3.14159\|26535\|89793\|23846\|26433\|83279\|...}}`	π = }}3.14159{{#if:26535\|26535}}{{#if:89793\|89793}}{{#if:23846\|23846}}{{#if:26433\|26433}}{{#if:83279\|83279}}{{#if:...\|...}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}}
`{{gaps\|P.\|A.\|M.}} Dirac`	{{{lhs}}} = }}P.{{#if:A.\|A.}}{{#if:M.\|M.}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}} Dirac
`{{nowrap\|1={{gaps\|sin\|2''φ''}} = 2 {{gaps\|sin\|''φ''}} {{gaps\|cos\|''φ''}}}}`	{{{lhs}}} = }}sin{{#if:2φ\|2φ}}{{#if:\|{{{3}}}}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}} = 2 {{#if:\|{{{lhs}}} = }}sin{{#if:φ\|φ}}{{#if:\|{{{3}}}}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}} {{#if:\|{{{lhs}}} = }}cos{{#if:φ\|φ}}{{#if:\|{{{3}}}}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}}
`"She disputed his statement that 'Voltaire never said "I disapprove of what you say, but I will defend to the death your right to say {{gaps\|it."\|'\|"}}`	{{{lhs}}} = }}it."{{#if:'\|'}}{{#if:"\|"}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}}
`{{gaps\|1.602\|176\|487(40)\|e=-19\|u=C}}`	{{{lhs}}} = }}1.602{{#if:176\|176}}{{#if:487(40)\|487(40)}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:-19\|×10^^{{{#ifeq:{{#expr:-19<0}}\|1\|−{{#expr:--19}}\|-19}}}}}{{#if:C\| C}}
`64 MB ({{gaps\|64\|base=2\|e=20}} bytes)`	{{{lhs}}} = }}64{{#if:\|{{{2}}}}}{{#if:\|{{{3}}}}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:20\|×2^^{{{#ifeq:{{#expr:20<0}}\|1\|−{{#expr:-20}}\|20}}}}}{{#if:\| {{{u}}}}} bytes)

Performance impact

Template:Gaps allows up to 20 parameters, and displays the gaps by setting the left-margin space of each group. The gaps are not actual spaces, so a copy/paste of the text is treated as connected, consecutive text. Template:Gaps is coded with minimal wikitext markup, so equivalent hand-coded markup could not be much shorter. Counting the length of the span-tags, there can be 15,800 instances of 2-part {gaps}, or 9,500 uses of 3-part gaps, or 6,800 with 4-part gaps (etc.), per page. The template uses a minimal expansion depth of only 2 levels (of the if-else nesting limit, such as 40 maximum), and if those 2 levels are exceeded, only the first portion will be shown. Although the text, as displayed, is consecutive as on-screen text, {gaps} for a number cannot be used in a calculation because the internal markup contains the invisible <span> tags which would be invalid text in typical numeric processing.

Input	Output
`{{gaps\|−2.002\|319\|304\|3622(15)}}`	{{{lhs}}} = }}−2.002{{#if:319\|319}}{{#if:304\|304}}{{#if:3622(15)\|3622(15)}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}}
`{{gaps\|299\|792\|458\|u=m/s}}`	{{{lhs}}} = }}299{{#if:792\|792}}{{#if:458\|458}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:m/s\| m/s}}
`{{gaps\|lhs=π\|3.14159\|26535\|89793\|23846\|26433\|83279\|...}}`	π = }}3.14159{{#if:26535\|26535}}{{#if:89793\|89793}}{{#if:23846\|23846}}{{#if:26433\|26433}}{{#if:83279\|83279}}{{#if:...\|...}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}}
`{{gaps\|P.\|A.\|M.}} Dirac`	{{{lhs}}} = }}P.{{#if:A.\|A.}}{{#if:M.\|M.}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}} Dirac
`{{nowrap\|1={{gaps\|sin\|2''φ''}} = 2 {{gaps\|sin\|''φ''}} {{gaps\|cos\|''φ''}}}}`	{{{lhs}}} = }}sin{{#if:2φ\|2φ}}{{#if:\|{{{3}}}}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}} = 2 {{#if:\|{{{lhs}}} = }}sin{{#if:φ\|φ}}{{#if:\|{{{3}}}}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}} {{#if:\|{{{lhs}}} = }}cos{{#if:φ\|φ}}{{#if:\|{{{3}}}}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}}
`"She disputed his statement that 'Voltaire never said "I disapprove of what you say, but I will defend to the death your right to say {{gaps\|it."\|'\|"}}`	{{{lhs}}} = }}it."{{#if:'\|'}}{{#if:"\|"}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:\|×10^^{{{#ifeq:{{#expr:{{{e}}}<0}}\|1\|−{{#expr:-{{{e}}}}}\|{{{e}}}}}}}}{{#if:\| {{{u}}}}}
`{{gaps\|1.602\|176\|487(40)\|e=-19\|u=C}}`	{{{lhs}}} = }}1.602{{#if:176\|176}}{{#if:487(40)\|487(40)}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:-19\|×10^^{{{#ifeq:{{#expr:-19<0}}\|1\|−{{#expr:--19}}\|-19}}}}}{{#if:C\| C}}
`64 MB ({{gaps\|64\|base=2\|e=20}} bytes)`	{{{lhs}}} = }}64{{#if:\|{{{2}}}}}{{#if:\|{{{3}}}}}{{#if:\|{{{4}}}}}{{#if:\|{{{5}}}}}{{#if:\|{{{6}}}}}{{#if:\|{{{7}}}}}{{#if:\|{{{8}}}}}{{#if:\|{{{9}}}}}{{#if:\|{{{10}}}}}{{#if:\|{{{11}}}}}{{#if:\|{{{12}}}}}{{#if:\|{{{13}}}}}{{#if:\|{{{14}}}}}{{#if:\|{{{15}}}}}{{#if:\|{{{16}}}}}{{#if:\|{{{17}}}}}{{#if:\|{{{18}}}}}{{#if:\|{{{19}}}}}{{#if:\|{{{20}}}}}{{#if:20\|×2^^{{{#ifeq:{{#expr:20<0}}\|1\|−{{#expr:-20}}\|20}}}}}{{#if:\| {{{u}}}}} bytes)

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