Telephone Link field formatter InvalidArgumentException with 5 digits or fewer in the number

Problem/Motivation

When applying the telephone link field formatter on number with 5 digits or less, Drupal miserably breaks, displaying some kind of WSOD with the following message: "The website encountered an unexpected error. Please try again later". Another message can be then found in the watchdog: InvalidArgumentException: The URI 'tel:112' is invalid. You must use a valid URI scheme. in Drupal\Core\Url::fromUri() (line 301 of /media/alex/4126b75c-86e8-4b12-a7c2-08e2d7dbfb08/alex/201310/drupal/core/lib/Drupal/Core/Url.php).

Steps to reproduce

• Create a content type with a telephone field.
• In the "Manage Display" page, choose the "Telephone link" field formatter for this field.
• Create a node of that content type with "123" as value of this field.
• The exception is thrown when the page is displayed.

Cause

The bug occurs in the parse_url PHP function, which processes numbers with 5 digits or less like TCP ports.

Proposed resolution

• Use a tiny hack to force parse_url to behave as expected. (add an empty query string at the end of the uri)

The underlying parse_url PHP function problem can be managed in a follow up issue. See https://www.drupal.org/node/2575577 →

Remaining tasks

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User interface changes

None.

API changes

None.

Data model changes

None.