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Re: [el-dev] Updating the text about escaping
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- From: Mark Thomas <markt@xxxxxxxxxx>
- Date: Tue, 28 Jan 2020 15:33:25 +0000
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It has been >72 hours with no feed back so far. Since around half of
that was over a weekend I'll leave this a few more days for feedback.
Absent any feedback, I'll apply the proposals below towards the end of
this week.
Mark
On 25/01/2020 11:02, Mark Thomas wrote:
> Hi,
>
> This originated with:
> https://github.com/eclipse-ee4j/el-ri/issues/42
>
> The area clarification is required is the handling of literal text. In
> stand-alone EL it is simple, the EL escaping rules apply.
>
> Where clarification is required is when EL is integrated into other
> technologies, such as JSP. The rules of escaping literal text will
> depend on who EL is integrated into the other technology. In the case of
> JSP, the JSP spec (that defines the integration of EL) states that the
> EL spec only applies once inside ${...} or #{...}. Outside those
> constructs, the JSP spec (with its slightly different escaping rules)
> applies.
>
> I'd like to propose adding the following text:
>
> At the end of section 1.2.2
>
> === draft start ===
> Note that when EL is integrated into other technologies, such as JSP,
> that integration may not include Literal Expressions. Where integrations
> do not include Literal Expressions, those integrating technologies will
> define their own specification, including escaping rules, for handling
> text outside of EL and the escaping rules described above will not apply.
> === draft end ===
>
>
> Ah, there was a need for clarification identified in #39 as well. For
> that, I'd like to propose the following:
>
> In section 1.3 replace the text
> <quote>
> String - With single and double quotes - " is escaped as \", ' is
> escaped as \', and \ is escaped as \\. Quotes only need to be escaped in
> a string value enclosed in the same type of quote
> </quote>
>
> === draft start ===
> String - Enclosed with single or double quotes with the following rules
> for escaping within the enclosed string:
> - \ must be escaped as \\
> - " must be escaped as \" when the string is enclosed with "
> - ' must be escaped as \' when the string is enclosed with '
> - " may be escaped as \" when the string is enclosed with '
> - ' may be escaped as \' when the string is enclosed with "
> - no other escaping is permitted within a string
> === draft end ===
>
>
> Mark
>
>
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