Can not query values that contain & (ampersand) characters

[steffenp@…]

It is not possible to search for values that contain characters used as separators in the query language such as & or |.

Example: If a milestone is named "x&y" the corresponding query [query:milestone=x&y] will result in an error:

[Error: Query filter requires field and constraints separated by a "="]

The TracQuery language needs to support escaping.

[cboos]

The "!" character used for escaping is already used there to express negation, so I think it's not an option.

So I propose to use "\", with "\\" being used to escape "\" itself.

[ThurnerRupert]

the gui query interface for milestones like this is also broken (in 0.10-3dev at least):

if you add milestones to criteria, the milestone dropdown contains "x&y", which gets translated to %26amp;y if you select it, so no result.

but the the result page contains then a correct drop down with "x&y" and then it works.

[anonymous]

milestones with a space in it won't work in queries either.

For example:

MPEG4 in MP4" Overzicht defecten

[anonymous]

The query above was:

[query:type=defect&milestone="Video-opslag: MPEG4 in MP4" Overzicht defecten]

[cboos]

For quoting spaces, this should be:

[query:"type=defect&milestone=Video-opslag: MPEG4 in MP4" Overzicht defecten]

Overzicht defecten

as explained in TracLinks#QuotingspaceinTracLinks.

As for escaping the characters used in the Query syntax, there's been no other proposal than using the backslash, so I'll go for that.