Improve message formating.

1 files changed, 21 insertions, 21 deletions

diff --git a/luatexbase-mcb.dtx b/luatexbase-mcb.dtx
index c07296e..770097c 100644
--- a/luatexbase-mcb.dtx
+++ b/luatexbase-mcb.dtx
@@ -466,7 +466,7 @@ function listhandler (name)
                     head = rtv2
                 end
                 if done == false then
-                    err("function \"%s\" returned false in callback '%s'",
+                    err("function '%s' returned false\nin callback '%s'",
                       f.description, name)
                 end
             end
@@ -551,23 +551,23 @@ end
 %    \begin{macrocode}
 function add_to_callback (name,func,description,priority)
     if type(func) ~= "function" then
-        err("unable to add function, no proper function passed")
+        err("unable to add function:\nno proper function passed")
         return
     end
     if not name or name == "" then
-        err("unable to add function, no proper callback name passed")
+        err("unable to add function:\nno proper callback name passed")
         return
     elseif not callbacktypes[name] then
-        err("unable to add function, '%s' is not a valid callback", name)
+        err("unable to add function:\n'%s' is not a valid callback", name)
         return
     end
     if not description or description == "" then
-        err("unable to add function to '%s', no proper description passed",
+        err("unable to add function to '%s':\nno proper description passed",
           name)
         return
     end
     if priority_in_callback(name, description) ~= 0 then
-        warning("function '%s' already registered in callback '%s'",
+        warning("function '%s' already registered\nin callback '%s'",
           description, name)
     end
     local l = callbacklist[name]
@@ -599,11 +599,11 @@ function add_to_callback (name,func,description,priority)
         priority = 1
     end
     if callbacktypes[name] == first and (priority ~= 1 or #l ~= 0) then
-        warning("several callbacks registered in callback '%s', "
+        warning("several callbacks registered in callback '%s',\n"
         .."only the first function will be active.", name)
     end
     table.insert(l,priority,f)
-    info("inserting function '%s' at position %s in callback list for '%s'",
+    info("inserting function '%s'\nat position %s in callback list\nfor '%s'",
       description, priority, name)
 end
 %    \end{macrocode}
@@ -616,15 +616,15 @@ end
 %    \begin{macrocode}
 function remove_from_callback (name, description)
     if not name or name == "" then
-        err("unable to remove function, no proper callback name passed")
+        err("unable to remove function:\nno proper callback name passed")
         return
     elseif not callbacktypes[name] then
-        err("unable to remove function, '%s' is not a valid callback", name)
+        err("unable to remove function:\n'%s' is not a valid callback", name)
         return
     end
     if not description or description == "" then
         err(
-          "unable to remove function from '%s', no proper description passed",
+          "unable to remove function from '%s':\nno proper description passed",
           name)
         return
     end
@@ -636,7 +636,7 @@ function remove_from_callback (name, description)
     for k,v in ipairs(l) do
         if v.description == description then
             table.remove(l,k)
-            info("removing function '%s' from '%s'",description,name)
+            info("removing function '%s'\nfrom '%s'",description,name)
             if not next(l) then
               callbacklist[name] = nil
               if not lua_callbacks_defaults[name] then
@@ -646,7 +646,7 @@ function remove_from_callback (name, description)
             return
         end
     end
-    warning("unable to remove function '%s' from '%s'",description,name)
+    warning("unable to remove function '%s'\nfrom '%s'",description,name)
 end
 %    \end{macrocode}
 %
@@ -655,10 +655,10 @@ end
 %    \begin{macrocode}
 function reset_callback (name)
     if not name or name == "" then
-        err("unable to reset, no proper callback name passed")
+        err("unable to reset:\nno proper callback name passed")
         return
     elseif not callbacktypes[name] then
-        err("reset error, '%s' is not a valid callback", name)
+        err("reset error: '%s'\nis not a valid callback", name)
         return
     end
     if not lua_callbacks_defaults[name] then
@@ -686,21 +686,21 @@ end
 %    \begin{macrocode}
 function create_callback(name, ctype, default)
     if not name then
-        err("unable to call callback, no proper name passed", name)
+        err("unable to call callback:\nno proper name passed", name)
         return nil
     end
     if not ctype or not default then
-        err("unable to create callback '%s': "
+        err("unable to create callback '%s':\n"
         .."callbacktype or default function not specified", name)
         return nil
     end
     if callbacktypes[name] then
-        err("unable to create callback '%s', callback already exists", name)
+        err("unable to create callback '%s':\ncallback already exists", name)
         return nil
     end
     local temp = str_to_type(ctype)
     if not temp then
-        err("unable to create callback '%s', type '%s' undefined", name, ctype)
+        err("unable to create callback '%s':\ntype '%s' undefined", name, ctype)
         return nil
     end
     ctype = temp
@@ -715,11 +715,11 @@ end
 %    \begin{macrocode}
 function call_callback(name, ...)
     if not name then
-        err("unable to call callback, no proper name passed", name)
+        err("unable to call callback:\nno proper name passed", name)
         return nil
     end
     if not lua_callbacks_defaults[name] then
-        err("unable to call lua callback '%s', unknown callback", name)
+        err("unable to call lua callback '%s':\nunknown callback", name)
         return nil
     end
     local l = callbacklist[name]