Change Details

Example API call: https://en.wikipedia.org/wiki/Special:ApiSandbox#action=templatedata&format=json&includeMissingTitles=1&lang=en&titles=Template%3ANavbox%20element%20isotopes&formatversion=2 The API auto-detects two parameters: `state`, which is fine, and `!}} style="border-spacing:1px;display:block;overflow:auto;width:100%;margin:0 !important"\n{{!}}- style="line-height:125%; vertical-align:top;"\n! style="text-align:right; width:3%; background:transparent" {{!}}`. Yes, that's reported as the parameter name. ===== Detailed analysis It is entirely impossible to use these sequences in a parameter name: * `|` separates different parameters. There is no way to escape this or any of the following in a parameter name. * `=` ends a parameter's name, and starts the value. At least when calling a template. The situation here is a little weird. It appears like attempting to use a parameter like `{{{a=b}}}` in a template is valid syntax. But it's impossible to call this parameter. Attempting to do so will create bad wikitext that calls a parameter `a` instead of `a=b`. * `{{` and `{{{` start another syntax element, and `}}` and `}}}` end one. It appears like it's technically possible to use the following sequences in a parameter name: * Single `{` and `}`. * `\n`, i.e. the parameter name is a multi-line string. However, this is extremely unlikely. We can pretty much guarantee there is something weird going on. Either the auto-detection made a mistake. Or the template is just broken. No sane template programmer would ever use curly braces in a parameter name. They would be constantly confused with syntax. Same with newlines in the middle of a parameter name. I have never seen anything like that in the 15+ years [I deal with wikitext](https://de.wikipedia.org/wiki/Benutzer:TMg/autoFormatter). And I touched a lot of templates, from a lot of users. Let's assume these are errors and not offer them as auto-detected parameters.

Example API call: https://en.wikipedia.org/wiki/Special:ApiSandbox#action=templatedata&format=json&includeMissingTitles=1&lang=en&titles=Template%3ANavbox%20element%20isotopes&formatversion=2 The API auto-detects two parameters: `state`, which is fine, and `!}} style="border-spacing:1px;display:block;overflow:auto;width:100%;margin:0 !important"\n{{!}}- style="line-height:125%; vertical-align:top;"\n! style="text-align:right; width:3%; background:transparent" {{!}}`. Yes, that's reported as the parameter name. ===== Detailed analysis It is entirely impossible to use these sequences in a parameter name: * `|` separates different parameters. There is no way to escape this or any of the following in a parameter name. * `=` ends a parameter's name, and starts the value. At least when calling a template. The situation here is a little weird. It appears like attempting to use a parameter like `{{{a=b}}}` in a template is valid syntax. But it's (almost, [see below](https://phabricator.wikimedia.org/T290322#7895614)) impossible to call this parameter. Attempting to do so will create bad wikitext that calls a parameter `a` instead of `a=b`. * `{{` and `{{{` start another syntax element, and `}}` and `}}}` end one. It appears like it's technically possible to use the following sequences in a parameter name: * Single `{` and `}`. * `\n`, i.e. the parameter name is a multi-line string. However, this is extremely unlikely. We can pretty much guarantee there is something weird going on. Either the auto-detection made a mistake. Or the template is just broken. No sane template programmer would ever use curly braces in a parameter name. They would be constantly confused with syntax. Same with newlines in the middle of a parameter name. I have never seen anything like that in the 15+ years [I deal with wikitext](https://de.wikipedia.org/wiki/Benutzer:TMg/autoFormatter). And I touched a lot of templates, from a lot of users. Let's assume these are errors and not offer them as auto-detected parameters.

Example API call: https://en.wikipedia.org/wiki/Special:ApiSandbox#action=templatedata&format=json&includeMissingTitles=1&lang=en&titles=Template%3ANavbox%20element%20isotopes&formatversion=2 The API auto-detects two parameters: `state`, which is fine, and `!}} style="border-spacing:1px;display:block;overflow:auto;width:100%;margin:0 !important"\n{{!}}- style="line-height:125%; vertical-align:top;"\n! style="text-align:right; width:3%; background:transparent" {{!}}`. Yes, that's reported as the parameter name. ===== Detailed analysis It is entirely impossible to use these sequences in a parameter name: * `|` separates different parameters. There is no way to escape this or any of the following in a parameter name. * `=` ends a parameter's name, and starts the value. At least when calling a template. The situation here is a little weird. It appears like attempting to use a parameter like `{{{a=b}}}` in a template is valid syntax. But it's (almost, [see below](https://phabricator.wikimedia.org/T290322#7895614)) impossible to call this parameter. Attempting to do so will create bad wikitext that calls a parameter `a` instead of `a=b`. * `{{` and `{{{` start another syntax element, and `}}` and `}}}` end one. It appears like it's technically possible to use the following sequences in a parameter name: * Single `{` and `}`. * `\n`, i.e. the parameter name is a multi-line string. However, this is extremely unlikely. We can pretty much guarantee there is something weird going on. Either the auto-detection made a mistake. Or the template is just broken. No sane template programmer would ever use curly braces in a parameter name. They would be constantly confused with syntax. Same with newlines in the middle of a parameter name. I have never seen anything like that in the 15+ years [I deal with wikitext](https://de.wikipedia.org/wiki/Benutzer:TMg/autoFormatter). And I touched a lot of templates, from a lot of users. Let's assume these are errors and not offer them as auto-detected parameters.