Title case, record with no language, english case is applied instead of desired locale

[glorieux-f]

Please follow the general troubleshooting steps first:

• [x] I read the README and followed the instructions.
• [x] I am sure that the used CSL metadata follows the CSL schema.
• [x] I use a valid CSL stylesheet

Bug reports:

citeproc-php, locale fr-FR or en-US, case of container-title is modified when !isset(language) || language == "en". Other bug, capitalizeForTitle seems to be not unicode, friendly (? Util/StringHelper.php#L96 )

• Piaget, J. (1922). language=en. L’Éducateur : Organe De La Société pédagogique De La Suisse Romande, LVIII(3), 33-39.
• Piaget, J. (1922). language=fr. L’Éducateur : organe de la Société pédagogique de la Suisse romande, LVIII(3), 33-39.
• Piaget, J. (1922). no language. L’Éducateur : Organe De La Société pédagogique De La Suisse Romande, LVIII(3), 33-39.

zotero desktop, locale fr-FR, if no language, case is modified according to the locale (fr)

• Piaget, J. (1922a). Language=en. L’Éducateur : Organe de La Société Pédagogique de La Suisse Romande, LVIII(3), 33‑39.
• Piaget, J. (1922a). Language=fr. L’Éducateur : organe de la Société pédagogique de la Suisse romande, LVIII(3), 33‑39.
• Piaget, J. (1922b). No language. L’Éducateur : organe de la Société pédagogique de la Suisse romande, LVIII(3), 33‑39.

zotero desktop, locale en-US, if no language, case is modified according to the locale (en)

• Piaget, J. (1922a). Language=en. L’Éducateur : Organe de La Société Pédagogique de La Suisse Romande, LVIII(3), 33–39.
• Piaget, J. (1922b). Language=fr. L’Éducateur : organe de la Société pédagogique de la Suisse romande, LVIII(3), 33–39.
• Piaget, J. (1922c). No language. L’Éducateur : Organe de La Société Pédagogique de La Suisse Romande, LVIII(3), 33–39.

Workaround, ensure language for each record.

Proposed fix Rendering/Text.php#L92

    $lang = (isset($data->language)) ? 
        $data->language : 
        strtok(CiteProc::getContext()->getLocale()->getLanguage(), '-');

Used CSL stylesheet:

apa.csl#L1217

    <text variable="container-title" font-style="italic" text-case="title"/>

Used CSL metadata

[
    {
        "id": "http://zotero.org/groups/5048422/items/S4RL74HB",
        "type": "article-journal",
        "container-title": "L’Éducateur : organe de la Société pédagogique de la Suisse romande",
        "issue": "3",
        "page": "33-39",
        "title": "no language",
        "volume": "LVIII",
        "author": [
            {
                "family": "Piaget",
                "given": "Jean"
            }
        ],
        "issued": {
            "date-parts": [
                [
                    "1922"
                ]
            ]
        }
    },
    {
        "id": "http://zotero.org/groups/5048422/items/S4RL74HB",
        "type": "article-journal",
        "container-title": "L’Éducateur : organe de la Société pédagogique de la Suisse romande",
        "language": "fr",
        "issue": "3",
        "page": "33-39",
        "title": "language=fr",
        "volume": "LVIII",
        "author": [
            {
                "family": "Piaget",
                "given": "Jean"
            }
        ],
        "issued": {
            "date-parts": [
                [
                    "1922"
                ]
            ]
        }
    },
    {
        "id": "http://zotero.org/groups/5048422/items/S4RL74HB",
        "type": "article-journal",
        "container-title": "L’Éducateur : organe de la Société pédagogique de la Suisse romande",
        "language": "en",
        "issue": "3",
        "page": "33-39",
        "title": "language=en",
        "volume": "LVIII",
        "author": [
            {
                "family": "Piaget",
                "given": "Jean"
            }
        ],
        "issued": {
            "date-parts": [
                [
                    "1922"
                ]
            ]
        }
    }
]