[setup - the official Cygwin setup program] branch master, updated. release_2.899

[setup - the official Cygwin setup program] branch master, updated. release_2.899

[jturney]

https://sourceware.org/git/gitweb.cgi?p=cygwin-apps/setup.git;h=e435a212a6e85169616a67c08eab1d9a387c6cfc

commit e435a212a6e85169616a67c08eab1d9a387c6cfc
Author: Jon Turney <jon.turney@dronecode.org.uk>
Date:   Wed Jan 1 14:38:45 2020 +0000

    Fix cases where incorrect action is stored by set_action()
    
    set_action() with action = Install_action and desired = empty version
    when curr = empty version is equivalent to action = NoChange_Action.
    
    (This can occur if we are selecting a category for install on the
    command line, and that category happens to include a package which only
    has a test version, but no current version)
    
    (For completeness, also address the case of action = Install_action,
    desired = empty_version, where curr = some version is equivalent to
    action = Uninstall_action)


Diff:
---
 package_meta.cc |   49 +++++++++++++++++++++++++------------------------
 1 files changed, 25 insertions(+), 24 deletions(-)

diff --git a/package_meta.cc b/package_meta.cc
index 940f69a..1f6ab16 100644
--- a/package_meta.cc
+++ b/package_meta.cc
@@ -549,30 +549,31 @@ packagemeta::set_action (_actions action, packageversion const &default_version,
   else if (action == Install_action)
     {
       desired = default_version;
-      if (desired)
-	{
-	  if (desired != installed)
-	    if (desired.accessible ())
-	      {
-		/* Memorize the fact that the user picked to install this package at least once. */
-		if (useraction)
-		  user_picked = true;
-
-		pick (true);
-		srcpick (false);
-	      }
-	    else
-	      {
-		pick (false);
-		srcpick (true);
-	      }
-	  else
-	    {
-	      action = NoChange_action;
-	      pick (false);
-	      srcpick (false);
-	    }
-	}
+      if (desired != installed)
+        if (desired.accessible ())
+          {
+            /* Memorize the fact that the user picked to install this package at least once. */
+            if (useraction)
+              user_picked = true;
+
+            pick (true);
+            srcpick (false);
+
+            /* Install no version is Uninstall */
+            if (!desired)
+              action = Uninstall_action;
+          }
+        else
+          {
+            pick (false);
+            srcpick (true);
+          }
+      else
+        {
+          action = NoChange_action;
+          pick (false);
+          srcpick (false);
+        }
     }
   else if (action == Reinstall_action)
     {