Make sure to unquote 'alr printenv' paths

Alire now quotes all the paths in the 'alr printenv' output: make
sure to unquote them before calling GPS.setenv to reload the project
with the right Alire environment.

For eng/ide/gnatstudio#30

Author: AnthonyLeonardoGracio

share/support/core/alire.py

@@ -11,6 +11,7 @@
 import os.path
 import re
 import tool_output
+import shlex
 from gi.repository import Gtk
 
 alr = os_utils.locate_exec_on_path("alr")
@@ -138,7 +139,7 @@ def on_project_changing(hook, file):
 class Alire_Parser(tool_output.OutputParser):
     """
     Parse the Alire output in oder to set the needed environment,
-    saving the original environment in order to restor it if needed.
+    saving the original environment in order to restore it if needed.
     """
 
     def __init__(self, child=None):
@@ -152,8 +153,11 @@ def on_stdout(self, text, command):
             m = self.exp.fullmatch(line)
 
             if m:
+                # Parse the output of 'alr printenv'.
+                # The paths might be quoted (e.g: export PATH="/home/something"): we use
+                # shlex.split to make sure we unquote them if needed.
                 name = m.group(1)
-                value = m.group(2)
+                value = shlex.split(m.group(2))[0]
                 GPS.Logger("ALIRE").log("%s=%s" % (name, value))
                 saved_env[name] = GPS.getenv(name)
                 GPS.setenv(name, value)
@@ -168,7 +172,7 @@ def on_stdout(self, text, command):
     GPS.parse_xml(
         """<?xml version="1.0"?><ALIRE>
     <target-model name="Alire" category="">
-       <description>Laubch Alire to print environment</description>
+       <description>Launch Alire to print environment</description>
        <command-line>
           <arg>alr</arg>
           <arg>--non-interactive</arg>