Question

Is there any way not to leave <choose> after first <when> match but continue check else conditions?

Answer 1

I believe it’s a no. As the spec says:

The content of the first, and only the first, xsl:when element whose
test is true is instantiated. If no xsl:when is true, the content of
the xsl:otherwise element is instantiated. If no xsl:when element is
true, and no xsl:otherwise element is present, nothing is created.

from: http://www.w3.org/TR/xslt#section-Conditional-Processing-with-xsl:choose

you can’t make it fall through other conditions like that. just convert it into a set of <xsl:if> following one another if you need a fall through

UPDATE. Here’s a quote from the O’Reilly’s XSLT book ( http://docstore.mik.ua/orelly/xml/xslt/ch04_02.htm ):

The C, C++, and Java switch statement is roughly equivalent to the
element. The one exception is that procedural languages
tend to use fallthrough processing. In other words, if a branch of the
switch statement evaluates to true, the runtime executes everything
until it encounters a break statement, even if some of that code is
part of other branches. The element doesn’t work that
way. If a given evaluates to true, only the statements
inside that are evaluated