Bản mẫu:ISO 639 name/doc

== Usage**
The ISO 639 name template is used to resolve ISO 639-1, ISO 639-2, ISO 639-3 and ISO 639-5 codes to language names. It will trim extraneous IETF language tags to just the ISO 639 code. E.g.:
Sanskrit in Latin script, which IETF language tag is sa-Latn, renders as:-  → cat=no
The error message can be suppressed with yes:-  → hide-err=yes
The rendered language name can be linked to the appropriate language article with yes:-  → link=yes
When linking, an alternate link label can be provided with :-  → label=sa-Latn
The ISO 639 name link template is the same as ISO 639 name except that it presets yes.
Both of these templates can be safely substituted.

**Other functions**
This template can be used to execute any of the functions exported by Module:ISO 639 name.  These function are:
*iso_639_code_exists – returns true if  is found in any of the ISO 639 data tables
*iso_639_code_to_name – (default) as described above
*iso_639_code_1_to_name – same as iso_639_code_to_name except constrained to the ISO 639-1 data table
*iso_639_code_2_to_name – same as iso_639_code_to_name except constrained to the ISO 639-2 data table
*iso_639_code_2B_to_name – same as iso_639_code_to_name except constrained to the ISO 639-2B data table
*iso_639_code_3_to_name – same as iso_639_code_to_name except constrained to the ISO 639-3 data table
*iso_639_code_5_to_name – same as iso_639_code_to_name except constrained to the ISO 639-5 data table
*iso_639_name_exists – returns true if  is found in any of the ISO 639 data tables
*iso_639_name_to_code – returns language code associated with ; may be constrained to a particular ISO 639 data table
*iso_639 – returns language name when given a valid language code; returns a language code when given a valid language name; may be constrained to a particular ISO 639 data table
To use these functions set fn to the appropriate function name.

**Language codes**

**Notes**

**Examples**
  gives en-  gives fr

**Error messages**
This template produces error messages.  These messages are:- – IETF language tags are not ISO 639 language codes.  When these tags are encountered, the template attempts to render the correct language and also emits this error message- – where  is 1, 2, 3, 5; template was called without the required language code- –  fails simple length validation; 639 part 1, language codes are two characters, for 639 parts 2, 3, and 5, language codes are three characters- –  not found after searching ISO 639- data
The module that does the work for this template has other functionality not supported by this template.  See Module:ISO 639 name.  Error messages related to that other functionality are:
*language name required – module function iso_639_name_to_code() only – this message emitted when a language name is not provided in the - – module functions iso_639_name_to_code() and iso_639() only – this message emitted when  is not one of 1, 2, 3, or 5
*language code or name required – module function iso_639() only – this message emitted when a language name or a language code is not provided in the 

**Tracking categories**
 Lỗi bản mẫu ISO 639 name

**See also**
 lang- mw lang- language with name