Separate package names in lists with commas instead of just spaces

Now that a package name can include a configuration, using just spaces is
insufficient.

2 files changed, 20 insertions, 19 deletions

diff --git a/bpkg/pkg-build.cxx b/bpkg/pkg-build.cxx
index 8e50d05..08e1868 100644
--- a/bpkg/pkg-build.cxx
+++ b/bpkg/pkg-build.cxx
@@ -1827,7 +1827,7 @@ namespace bpkg
               if (!p.user_selection ())
               {
                 for (const config_package& cp: p.required_by)
-                  rb += ' ' + cp.string ();
+                  rb += (rb.empty () ? " " : ", ") + cp.string ();
               }
 
               if (!rb.empty ())
@@ -2788,18 +2788,19 @@ namespace bpkg
     {
       dr << info << package_string (nm, u.first) << " doesn't satisfy";
 
-      size_t n (0);
       const sp_set& ps (u.second);
-      for (const config_selected_package& p: ps)
+
+      size_t i (0), n (ps.size ());
+      for (auto p (ps.begin ()); i != n; ++p)
       {
-        dr << ' ' << *p.package << p.db;
+        dr << (i == 0 ? " " : ", ") << *p->package << p->db;
 
-        if (++n == 5 && ps.size () != 6) // Printing 'and 1 more' looks stupid.
+        if (++i == 5 && n != 6) // Printing 'and 1 more' looks stupid.
           break;
       }
 
-      if (n != ps.size ())
-        dr << " and " << ps.size () - n << " more";
+      if (i != n)
+        dr << " and " << n - i << " more";
 
       if (++nv == 3 && unsatisfiable.size () != 4)
         break;
@@ -5753,7 +5754,7 @@ namespace bpkg
           if (!p.user_selection ())
           {
             for (const config_package& cp: p.required_by)
-              rb += ' ' + cp.string ();
+              rb += (rb.empty () ? " " : ", ") + cp.string ();
 
             // If not user-selected, then there should be another (implicit)
             // reason for the action.
diff --git a/tests/pkg-build.testscript b/tests/pkg-build.testscript
index b8c17d2..7938e60 100644
--- a/tests/pkg-build.testscript
+++ b/tests/pkg-build.testscript
@@ -782,7 +782,7 @@ test.options += --no-progress
     :
     $clone_cfg;
     $* libbaz >>EOO
-      new libfoo/1.1.0 (required by libbar libbaz)
+      new libfoo/1.1.0 (required by libbar, libbaz)
       new libbar/1.1.0 (required by libbaz)
       new libbaz/1.1.0
       EOO
@@ -844,7 +844,7 @@ test.options += --no-progress
       $pkg_fetch -e $src/libfix-0.0.1.tar.gz && $pkg_unpack libfix;
 
       $* libbaz >>EOO;
-        upgrade libfoo/1.1.0 (required by libbar libbaz)
+        upgrade libfoo/1.1.0 (required by libbar, libbaz)
         new libbar/1.1.0 (required by libbaz)
         new libbaz/1.1.0
         EOO
@@ -860,7 +860,7 @@ test.options += --no-progress
       $pkg_fetch -e $src/libfoo-1.2.0.tar.gz && $pkg_unpack libfoo;
 
       $* libbaz >>EOO;
-        downgrade libfoo/1.1.0 (required by libbar libbaz)
+        downgrade libfoo/1.1.0 (required by libbar, libbaz)
         new libbar/1.1.0 (required by libbaz)
         new libbaz/1.1.0
         EOO
@@ -967,7 +967,7 @@ test.options += --no-progress
     $* libbar >>EOO
       upgrade libfoo/1.1.0 (required by libbar)
       upgrade libbar/1.1.0
-      reconfigure libbaz (dependent of libbar libfoo)
+      reconfigure libbaz (dependent of libbar, libfoo)
       EOO
 
     : foo
@@ -976,7 +976,7 @@ test.options += --no-progress
     $* libfoo >>EOO
       upgrade libfoo/1.1.0
       reconfigure libbar (dependent of libfoo)
-      reconfigure libbaz (dependent of libbar libfoo)
+      reconfigure libbaz (dependent of libbar, libfoo)
       EOO
 
     : foo-bar
@@ -985,7 +985,7 @@ test.options += --no-progress
     $* libfoo libbar/1.0.0 >>EOO
       upgrade libfoo/1.1.0
       reconfigure/update libbar/1.0.0
-      reconfigure libbaz (dependent of libbar libfoo)
+      reconfigure libbaz (dependent of libbar, libfoo)
       EOO
 
     : bar-foo
@@ -994,7 +994,7 @@ test.options += --no-progress
     $* libbar/1.0.0 libfoo >>EOO
       upgrade libfoo/1.1.0
       reconfigure/update libbar/1.0.0
-      reconfigure libbaz (dependent of libbar libfoo)
+      reconfigure libbaz (dependent of libbar, libfoo)
       EOO
 
     : baz-foo
@@ -4639,7 +4639,7 @@ else
       $rep_add $rep/t7a && $rep_fetch;
 
       $* libbar <'y' 2>>~%EOE%;
-          new libbaz/1.0.0 (required by foo libbar)
+          new libbaz/1.0.0 (required by foo, libbar)
           new foo/1.0.0 (required by libbar)
           new libbar/1.0.0
         continue? [Y/n] fetched libbaz/1.0.0
@@ -4665,7 +4665,7 @@ else
       $rep_add $rep/t7b && $rep_fetch;
 
       $* libbar <'y' 2>>~%EOE%;
-          upgrade libbaz/1.1.0 (required by foo libbar)
+          upgrade libbaz/1.1.0 (required by foo, libbar)
           upgrade foo/1.1.0 (required by libbar)
           upgrade libbar/1.1.0
         continue? [Y/n] disfigured libbar/1.0.0
@@ -5748,7 +5748,7 @@ else
         y
         EOI
         %  new libbaz/1.0.0 \[cfg3.\] \(required by foo \[cfg3.\]\)%
-        %  new foo/1.0.0 \[cfg3.\] \(required by libbiz libbuild2-foo \[cfg2.\]\)%
+        %  new foo/1.0.0 \[cfg3.\] \(required by libbiz, libbuild2-foo \[cfg2.\]\)%
         %  new libbuild2-bar/1.0.0 \[cfg2.\] \(required by libbuild2-foo \[cfg2.\]\)%
         %  new libbaz/1.0.0 \[cfg2.\] \(required by libbuild2-foo \[cfg2.\]\)%
         %  new libbuild2-foo/1.0.0 \[cfg2.\] \(required by libbiz\)%
@@ -5818,7 +5818,7 @@ else
         y
         EOI
         %  new libbaz/1.0.0 \[cfg3.\] \(required by foo \[cfg3.\]\)%
-        %  new foo/1.0.0 \[cfg3.\] \(required by libbiz libbuild2-foo \[cfg2.\]\)%
+        %  new foo/1.0.0 \[cfg3.\] \(required by libbiz, libbuild2-foo \[cfg2.\]\)%
         %  new libbuild2-bar/1.0.0 \[cfg2.\] \(required by libbuild2-foo \[cfg2.\]\)%
         %  new libbaz/1.0.0 \[cfg2.\]%
         %  new libbuild2-foo/1.0.0 \[cfg2.\]%