Variables in selectors are not resolved

[dellermann]

I have the following LESS files:

grails-app/assets/stylesheets/test-import.less:

@prefix: foo;

.@{prefix} {
  color: red;
}

grails-app/assets/stylesheets/test-main.less:

@import "test-import";

.bar {
  .foo;
}

If I include this file using <asset:stylesheet src="test-main" /> then I get the following LESS compiler error:

errors.GrailsExceptionResolver Less4jException occurred when processing request: [GET] /my-app/assets/test-main.css - parameters:
compile: false
Could not compile less. 1 error(s) occurred:
ERROR 4:3 Could not find mixin named ".foo".
. Stacktrace follows:
com.github.sommeri.less4j.Less4jException: Could not compile less. 1 error(s) occurred:
ERROR 4:3 Could not find mixin named ".foo".
        at com.github.sommeri.less4j.core.ThreadUnsafeLessCompiler.compile(ThreadUnsafeLessCompiler.java:77)
        at asset.pipeline.less.Less4jProcessor.process(Less4jProcessor.groovy:30)
        at asset.pipeline.less.LessAssetFile.processedStream(LessAssetFile.groovy:39)
        at asset.pipeline.DirectiveProcessor.fileContents(DirectiveProcessor.groovy:112)
        at asset.pipeline.AssetProcessorService.serveUncompiledAsset(AssetProcessorService.groovy:62)
        at asset.pipeline.AssetsController.index(AssetsController.groovy:26)
        at asset.pipeline.AssetPipelineFilter.doFilter(AssetPipelineFilter.groovy:61)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)

Obviously, the selector containing the prefix is not compiled and thus, cannot be mixed in. However, when pre-compiling LESS files in production environment, it works.

Working with computed selectors is necessary, e. g. when using LESS files of FontAwesome.

[davydotcom]

You might try turning the compiler mode back to standard and not using less4j. Could be a bug in less4j

On Sep 2, 2014, at 7:18 AM, Daniel Ellermann [email protected] wrote:

I have the following LESS files:

grails-app/assets/stylesheets/test-import.less:

@Prefix: foo;

.@{prefix} {
color: red;
}
grails-app/assets/stylesheets/test-main.less:

@import "test-import";

.bar {
.foo;
}
If I include this file using <asset:stylesheet src="test-main" /> then I get the following LESS compiler error:

errors.GrailsExceptionResolver Less4jException occurred when processing request: [GET] /my-app/assets/test-main.css - parameters:
compile: false
Could not compile less. 1 error(s) occurred:
ERROR 4:3 Could not find mixin named ".foo".
. Stacktrace follows:
com.github.sommeri.less4j.Less4jException: Could not compile less. 1 error(s) occurred:
ERROR 4:3 Could not find mixin named ".foo".
at com.github.sommeri.less4j.core.ThreadUnsafeLessCompiler.compile(ThreadUnsafeLessCompiler.java:77)
at asset.pipeline.less.Less4jProcessor.process(Less4jProcessor.groovy:30)
at asset.pipeline.less.LessAssetFile.processedStream(LessAssetFile.groovy:39)
at asset.pipeline.DirectiveProcessor.fileContents(DirectiveProcessor.groovy:112)
at asset.pipeline.AssetProcessorService.serveUncompiledAsset(AssetProcessorService.groovy:62)
at asset.pipeline.AssetsController.index(AssetsController.groovy:26)
at asset.pipeline.AssetPipelineFilter.doFilter(AssetPipelineFilter.groovy:61)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Obviously, the selector containing the prefix is not compiled and thus, cannot be mixed in. However, when pre-compiling LESS files in production environment, it works.

Working with computed selectors is necessary, e. g. when using LESS files of FontAwesome.

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