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bodewig pushed a commit to branch 1.9.x
in repository https://gitbox.apache.org/repos/asf/ant.git
The following commit(s) were added to refs/heads/1.9.x by this push:
new 486e141 this is why we still use env and friends
486e141 is described below
commit 486e141b47f62e64f026859f98a6184ea2d0c264
Author: Stefan Bodewig <[email protected]>
AuthorDate: Tue Apr 16 08:39:31 2019 +0200
this is why we still use env and friends
---
manual/Tasks/property.html | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/manual/Tasks/property.html b/manual/Tasks/property.html
index 4e42af1..42250b9 100644
--- a/manual/Tasks/property.html
+++ b/manual/Tasks/property.html
@@ -315,11 +315,18 @@ deploy.url=http://${deploy.server}:${deploy.port}/
<a name="notes-env"></a>
<h3>Notes about environment variables</h3>
<p>
- Ant runs on Java 1.2 therefore it cannot use Java5 features for accessing
environment
- variables. So it starts a command in a new process which prints the
environment variables,
- analyzes the output and creates the properties. <br>
+ When Ant started to support setting properties from environment
+ variables it ran on Java 1.2 where <code>System.getEnv</code> didn't
+ work. So we decided to start a command in a new process which prints
+ the environment variables, analyzes the output and creates the
+ properties. Once Java 5 became our baseline we could have switched
+ to <code>getEnv</code> but it returned different results on some
+ platforms so we stuck with the command approach to remain backwards
+ compatible.
+</p>
+<p>
There are commands for the following operating systems implemented in
- <a
href="https://git-wip-us.apache.org/repos/asf?p=ant.git;a=blob;f=src/main/org/apache/tools/ant/taskdefs/Execute.java;hb=24e5a0e881dba01a6f012c4a271b743946412a0d";>
+ <a
href="https://gitbox.apache.org/repos/asf?p=ant.git;a=blob;f=src/main/org/apache/tools/ant/taskdefs/Execute.java;h=2f29256ed8ee964d78718fd0d7929659008482e6;hb=HEAD";>
Execute.java</a> (method <tt>getProcEnvCommand()</tt>):
<table>
<tr>
