[jira] [Commented] (MASSEMBLY-800) Substitution of variable fields enclosed in ${...} does not work

[Markus Helm (JIRA)]

    [ 
https://issues.apache.org/jira/browse/MASSEMBLY-800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15202384#comment-15202384
 ] 

Markus Helm commented on MASSEMBLY-800:
---------------------------------------

Another workaround is to disable the default {{*$\{\*\}*}} delimiter in the 
plugin configuration:
{code}
<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-assembly-plugin</artifactId>
  <version>2.6</version>
  <executions>
    <execution>
      <id>copy-resources</id>
      <phase>process-resources</phase>
      <goals>
        <goal>single</goal>
      </goals>
      <configuration>
        <descriptors>
          <descriptor>${project.basedir}/src/assembly/resources.xml</descriptor>
        </descriptors>

        <delimiters>
          <delimiter>@</delimiter>
        </delimiters>
        
        <attach>false</attach>

        <finalName>resources</finalName>
        <appendAssemblyId>false</appendAssemblyId>
        <outputDirectory>${project.build.directory}</outputDirectory>
      </configuration>
    </execution>
  </executions>
</plugin>
{code}

Input:
{code}
#!/usr/bin/env bash
B=${A:-@maven.default@}

DEFAULT="@maven.default@"
C=${A:-${DEFAULT}}
{code}

Output:
{code}
#!/usr/bin/env bash
B=${A:-Hello World}

DEFAULT="Hello World"
C=${A:-${DEFAULT}}
{code}

> Substitution of variable fields enclosed in ${...} does not work
> ----------------------------------------------------------------
>
>                 Key: MASSEMBLY-800
>                 URL: https://issues.apache.org/jira/browse/MASSEMBLY-800
>             Project: Maven Assembly Plugin
>          Issue Type: Bug
>          Components: filtering
>    Affects Versions: 2.6
>            Reporter: Markus Helm
>            Priority: Minor
>         Attachments: massembly-reproducer.tar.gz
>
>
> A variable field which is enclosed by {{*$\{...\}*}} does not get substituted 
> during filtering. If the same variable field is not enclosed as described, 
> the substitution works as expected.
> Before filtering:
> {code}
> #!/usr/bin/env bash
> B=${A:-${maven.default}}
> DEFAULT="${maven.default}"
> C=${A:-${DEFAULT}}
> {code}
> After filtering:
> {code}
> #!/usr/bin/env bash
> B=${A:-${maven.default}}
> DEFAULT="Hello World"
> C=${A:-${DEFAULT}}
> {code}
> The code snippet above also describes a possible workaround by defining a 
> variable outside of {{*$\{...\}*}}.



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