As seen at [[vi:Thành viên:Mxn/Từ thần chú không gian tên]], the {{SUBJECTSPACE}} magic word converts spaces to underscores unless a page name is explicitly specified using the {{SUBJECTSPACE:…}} syntax.

This behavior causes problems primarily on Vietnamese-language wikis, in which nearly all namespace names are compound words. For example, templates imported from the English Wikipedia often contain subtle bugs because {{SUBJECTSPACE}} is compared to the output of {{NS:…}}. The workaround is to always specify the page name explicitly, i.e. {{SUBJECTSPACE:{{FULLPAGENAME}}}}, but it is quite inconvenient to have to continually add this workaround to templates copied from other wikis.

Moreover, the English Wikipedia’s “Education Program” namespace and English Wiktionary’s “Sign gloss” namespace are also affected, as would any project namespace named with a compound word.

Version: 1.21.x
Severity: normal
URL: http://vi.wikipedia.org/wiki/Thành_viên:Mxn/Từ_thần_chú_không_gian_tên