Merged revisions 3057-3059,3061-3264 via svnmerge from

http://scons.tigris.org/svn/scons/branches/core

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  r3061 | stevenknight | 2008-06-10 10:06:24 -0700 (Tue, 10 Jun 2008) | 3 lines

  Issue 2085:  Fix man page indentation under Debian systems.
  Also add escape characters to the beginnings of some necessary lines.
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  r3063 | GregNoel | 2008-06-10 17:50:28 -0700 (Tue, 10 Jun 2008) | 1 line

  Add David as a member; parametize input file
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  r3064 | stevenknight | 2008-06-11 07:22:23 -0700 (Wed, 11 Jun 2008) | 3 lines

  Issue 1973:  Clarify the man page description of the SConscript(src_dir)
  argument.
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  r3065 | stevenknight | 2008-06-11 11:25:00 -0700 (Wed, 11 Jun 2008) | 3 lines

  Issues 1974, 1999:  document {Add,Get,Set}Option().  Reorganize the
  section a little bit, other minor edits.
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  r3066 | garyo | 2008-06-12 19:53:51 -0700 (Thu, 12 Jun 2008) | 1 line

  Document GetBuildFailures in Users Guide.  Closes issue #1989.
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  r3067 | stevenknight | 2008-06-14 06:42:07 -0700 (Sat, 14 Jun 2008) | 2 lines

  Fix build errors from undefined &GetBuildFailures; entity in doc.
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  r3073 | garyo | 2008-06-14 18:40:20 -0700 (Sat, 14 Jun 2008) | 1 line

  Fix issue #1538 (Handling of string argument in Action.Action).  Includes test.
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  r3074 | garyo | 2008-06-14 19:11:30 -0700 (Sat, 14 Jun 2008) | 1 line

  doc: Trivial man page typo fix.
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  r3075 | stevenknight | 2008-06-15 14:35:13 -0700 (Sun, 15 Jun 2008) | 3 lines

  Add a test to make sure the env.RCS() applied to an individual file works
  correctly when the checked-out copy is changed.
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  r3076 | stevenknight | 2008-06-15 23:07:17 -0700 (Sun, 15 Jun 2008) | 2 lines

  Issue 2025:  User's Guide updates from Randall Spangler's review.
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  r3078 | stevenknight | 2008-06-16 06:26:13 -0700 (Mon, 16 Jun 2008) | 2 lines

  Issue 1990:  Document the Requires() function in the Users's Guide.
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  r3082 | stevenknight | 2008-06-16 19:31:00 -0700 (Mon, 16 Jun 2008) | 3 lines

  Fix the second example in the AddMethod() chapter.  Show the Windows
  output generating a resource file.  Other copyedits.
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  r3083 | stevenknight | 2008-06-17 06:44:02 -0700 (Tue, 17 Jun 2008) | 2 lines

  Fix misspelled entity:  &Builders; => &Builder;s.
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  r3084 | stevenknight | 2008-06-17 08:30:13 -0700 (Tue, 17 Jun 2008) | 3 lines

  Issue 1588:  - Document suggested use of the Viual C/C++ /FC option to fix
  the ability to double-click on file names in compilation error messages.
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  r3085 | stevenknight | 2008-06-17 08:50:33 -0700 (Tue, 17 Jun 2008) | 3 lines

  Issue 1687:  Document the need to use Clean() for any SideEffect()
  files that must be explicitly removed when their targets are removed.
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  r3086 | stevenknight | 2008-06-17 10:59:28 -0700 (Tue, 17 Jun 2008) | 2 lines

  Typo fix in the new SideEffect() paragraph.  (Gary Oberbrunner)
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  r3088 | cournape | 2008-06-17 19:55:27 -0700 (Tue, 17 Jun 2008) | 3 lines

  Initialized merge tracking via "svnmerge" with revisions "1-3087" from
  http://scons.tigris.org/svn/scons/branches/vs_revamp
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  r3094 | stevenknight | 2008-06-19 09:52:16 -0700 (Thu, 19 Jun 2008) | 3 lines

  Change the User's Guide to use the new Variables object and its
  associated function for controlling command-line build variables.
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  r3115 | stevenknight | 2008-06-25 06:46:36 -0700 (Wed, 25 Jun 2008) | 2 lines

  Issue 2072:  end indentation after generated Builder text.
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  r3116 | stevenknight | 2008-06-25 19:07:15 -0700 (Wed, 25 Jun 2008) | 2 lines

  Reorganize the command-line arguments chapter.
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  r3117 | stevenknight | 2008-06-25 19:13:58 -0700 (Wed, 25 Jun 2008) | 2 lines

  Editing pass for formatting in the Glob() sections.
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  r3118 | stevenknight | 2008-06-25 19:23:09 -0700 (Wed, 25 Jun 2008) | 3 lines

  Wording changing:  Preventing => Controlling, because the chapter
  also talks about how to clean additional targets.
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  r3119 | stevenknight | 2008-06-25 19:50:41 -0700 (Wed, 25 Jun 2008) | 2 lines

  Fix missing </literal> tags, minor wording fix.
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  r3120 | stevenknight | 2008-06-25 19:58:34 -0700 (Wed, 25 Jun 2008) | 2 lines

  Add "the Default Function" to the appropriate subsection title.
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  r3121 | stevenknight | 2008-06-26 08:33:43 -0700 (Thu, 26 Jun 2008) | 2 lines

  Issue 1988:  Document the Variables.UnknownVariables() method.
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  r3122 | stevenknight | 2008-06-26 08:35:51 -0700 (Thu, 26 Jun 2008) | 3 lines

  Remove comments listing some of the variables that have been
  documented recently.
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  r3123 | stevenknight | 2008-06-26 12:42:53 -0700 (Thu, 26 Jun 2008) | 2 lines

  Issue 2118:  Fix incorrectly swapped man page text.  (Alexey Zezukin)
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  r3124 | bdbaddog | 2008-06-26 21:23:46 -0700 (Thu, 26 Jun 2008) | 2 lines

  Fix bug 2108 - duplicate text in description of interactive mode
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  r3125 | stevenknight | 2008-06-27 21:54:56 -0700 (Fri, 27 Jun 2008) | 3 lines

  Issue 1993:  Document the $*COMSTR variables, the Progress() function,
  and create a common "Controlling Build Output" chapter.
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  r3126 | garyo | 2008-06-28 05:46:44 -0700 (Sat, 28 Jun 2008) | 1 line

  Fix issue 2105; temporarily omit doc saying that SetOption can override user-created Options (until that is implemented).
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  r3127 | stevenknight | 2008-06-28 07:29:18 -0700 (Sat, 28 Jun 2008) | 2 lines

  Issue 1747:  Explicitly document use of Node lists as input to Depends().
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  r3128 | stevenknight | 2008-06-28 07:48:32 -0700 (Sat, 28 Jun 2008) | 6 lines

  White space change:  indent the construction environment sections
  further to make way for combining this chapter with others to make
  one big "Controlling Environments" chapter.
  Also, get rid of some now-unnecessary doc from the old Cons classic
  POD, that was taking up space here waiting to be documented.
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  r3129 | cournape | 2008-06-29 01:56:30 -0700 (Sun, 29 Jun 2008) | 3 lines

  Initialized merge tracking via "svnmerge" with revisions "1-3128" from
  http://scons.tigris.org/svn/scons/branches/trygrep
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  r3143 | stevenknight | 2008-07-02 10:29:39 -0700 (Wed, 02 Jul 2008) | 3 lines

  Initialized merge tracking via "svnmerge" with revisions "1-3142" from
  http://scons.tigris.org/svn/scons/branches/sgk_lookup
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  r3181 | stevenknight | 2008-07-08 07:17:27 -0700 (Tue, 08 Jul 2008) | 4 lines

  Reorganize the discussion of different environments into one chapter.
  Document the SetDefault(), PrependUnique(), AppendUnique(),
  PrependENVPath() and AppendENVPath() functions.
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  r3182 | stevenknight | 2008-07-08 08:47:55 -0700 (Tue, 08 Jul 2008) | 2 lines

  Issue 1998:  Docment the ARGLIST variable in the User's Guide.
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  r3194 | GregNoel | 2008-07-09 23:16:51 -0700 (Wed, 09 Jul 2008) | 1 line

  remove unnecessary trailing spaces on lines
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  r3204 | stevenknight | 2008-07-11 08:29:18 -0700 (Fri, 11 Jul 2008) | 2 lines

  Issue 1853:  Remove referenc to SCons.Util.CLVar from a doc example.
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  r3206 | GregNoel | 2008-07-12 02:08:19 -0700 (Sat, 12 Jul 2008) | 1 line

  Another go at describing VariantDir()
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  r3213 | stevenknight | 2008-07-13 08:57:57 -0700 (Sun, 13 Jul 2008) | 3 lines

  Set /branches/comments in svnmerge-integrated property to allow
  merging changes in both directions.
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  r3217 | stevenknight | 2008-07-16 06:52:44 -0700 (Wed, 16 Jul 2008) | 2 lines

  Update the copyright year in the User's Guide.
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  r3218 | stevenknight | 2008-07-16 07:08:52 -0700 (Wed, 16 Jul 2008) | 3 lines

  Issue 1881:  Add man page text clarifying the behavior of
  Add{Pre,Post}Action() when multiple targets are specified.
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  r3223 | stevenknight | 2008-07-18 08:18:45 -0700 (Fri, 18 Jul 2008) | 3 lines

  Initialized merge tracking via "svnmerge" with revisions "1-3222" from
  http://scons.tigris.org/svn/scons/branches/sgk_subst
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  r3231 | stevenknight | 2008-07-22 01:58:11 -0700 (Tue, 22 Jul 2008) | 4 lines

  Enhance MSVSProject() tests so they're runnable on any system, regardless
  of whether Visual Studio is installed, or if it's even a Windows system
  at all.
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  r3237 | GregNoel | 2008-07-26 00:07:49 -0700 (Sat, 26 Jul 2008) | 1 line

  Issue 1983: Document ParseConfig, MergeFlags, and ParseFlags for the Users' Guide
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  r3238 | stevenknight | 2008-07-26 08:38:18 -0700 (Sat, 26 Jul 2008) | 3 lines

  Follow-ons for building the User's Guide with Greg's recent additions
  for MergeFlags() and ParseFlags().
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  r3239 | stevenknight | 2008-07-26 09:52:40 -0700 (Sat, 26 Jul 2008) | 3 lines

  Re-arrange some sections talking about creating construction environments
  and fetching/expanding variables.
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  r3240 | stevenknight | 2008-07-26 12:16:11 -0700 (Sat, 26 Jul 2008) | 2 lines

  Stylistic editing of new {Merge,Parse}{Config,Flags} sections.
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  r3241 | GregNoel | 2008-07-26 12:42:42 -0700 (Sat, 26 Jul 2008) | 1 line

  Issue 1987: Document SideEffect for Users' Guide (incomplete)
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  r3242 | stevenknight | 2008-07-26 13:27:56 -0700 (Sat, 26 Jul 2008) | 2 lines

  Correct dumb XML mistakes in my last checkin.
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  r3243 | stevenknight | 2008-07-26 13:34:05 -0700 (Sat, 26 Jul 2008) | 2 lines

  One-character typo.  Gah.
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  r3244 | stevenknight | 2008-07-26 13:44:14 -0700 (Sat, 26 Jul 2008) | 2 lines

  Issue 1977,1980:  document the Exit() and Flatten() functions.
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  r3245 | stevenknight | 2008-07-27 10:24:12 -0700 (Sun, 27 Jul 2008) | 14 lines

  Updates to the new SideEffect section (kudos to Greg).

  While working on this, Greg discovered a bug (issue #2154) that prevents
  a SideEffect() file from being used as input to another builder call; it
  makes the builder target not get build when run in paralle (e.g. -j2)...
  :-(  So this patch comments out that section of Greg's section.

  This also contains my usual editing pass.  In this case I changed some
  of the examples and added a bunch of text to try to help clarify some
  things that seemed important.  I also added a closing paragraph warning
  that SideEffect() really shouldn't be used as an alternative to specifying
  multiple target files in a Builder call when a command builds more than
  one file that you care about.
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  r3246 | stevenknight | 2008-07-27 10:31:17 -0700 (Sun, 27 Jul 2008) | 2 lines

  Proofreading edits of the MergeFlags() section.  (Greg Noel)
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  r3247 | stevenknight | 2008-07-27 11:17:27 -0700 (Sun, 27 Jul 2008) | 2 lines

  Issue 1976:  document ensure{Python,SCons}Version() in the User's Guide.
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  r3249 | GregNoel | 2008-07-28 15:57:00 -0700 (Mon, 28 Jul 2008) | 1 line

  Add svn-bisect script
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1 files changed, 114 insertions, 16 deletions

diff --git a/doc/user/builders-writing.in b/doc/user/builders-writing.in
index eefbb31..b953975 100644
--- a/doc/user/builders-writing.in
+++ b/doc/user/builders-writing.in
@@ -696,6 +696,28 @@ This functionality could be invoked as in the following example:
 
     &SCons; supports the ability for a Builder to modify the
     lists of target(s) from the specified source(s).
+    You do this by defining an &emitter; function
+    that takes as its arguments
+    the list of the targets passed to the builder,
+    the list of the sources passed to the builder,
+    and the construction environment.
+    The emitter function should return the modified
+    lists of targets that should be built
+    and sources from which the targets will be built.
+
+    </para>
+
+    <para>
+
+    For example, suppose you want to define a Builder
+    that always calls a <filename>foobuild</filename> program,
+    and you want to automatically add
+    a new target file named
+    <filename>new_target</filename>
+    and a new source file named
+    <filename>new_source</filename>
+    whenever it's called.
+    The &SConstruct; file might look like this:
 
     </para>
 
@@ -738,26 +760,102 @@ This functionality could be invoked as in the following example:
        env.Foo('file')
     </sconstruct>
 
+    <para>
+    
+    And would yield the following output:
+
+    </para>
+
     <scons_output example="ex7">
       <scons_output_command>scons -Q</scons_output_command>
     </scons_output>
 
-    <programlisting>
-       bld = Builder(action = 'my_command',
-                     suffix = '.foo',
-                     src_suffix = '.input',
-                     emitter = 'MY_EMITTER')
-       def modify1(target, source, env):
-           return target, source
-       def modify2(target, source, env):
-           return target, source
-       env1 = Environment(BUILDERS = {'Foo' : bld},
-                          MY_EMITTER = modify1)
-       env2 = Environment(BUILDERS = {'Foo' : bld},
-                          MY_EMITTER = modify2)
-       env1.Foo('file1')
-       env2.Foo('file2')
-    </programlisting>
+    <para>
+
+    One very flexible thing that you can is specify
+    use a construction variable to specify
+    different emitter functions for different
+    construction variable.
+    To do this, specify a string
+    containing a construction variable
+    expansion as the emitter when you call
+    the &Builder; function,
+    and set that construction variable to
+    the desired emitter function
+    in different construction environments:
+
+    </para>
+
+    <scons_example name="MY_EMITTER">
+
+      <file name="SConstruct" printme="1">
+        bld = Builder(action = 'my_command $SOURCES > $TARGET',
+                      suffix = '.foo',
+                      src_suffix = '.input',
+                      emitter = '$MY_EMITTER')
+        def modify1(target, source, env):
+            return target, source + ['modify1.in']
+        def modify2(target, source, env):
+            return target, source + ['modify2.in']
+        env1 = Environment(BUILDERS = {'Foo' : bld},
+                           MY_EMITTER = modify1)
+        env2 = Environment(BUILDERS = {'Foo' : bld},
+                           MY_EMITTER = modify2)
+        env1.Foo('file1')
+        env2.Foo('file2')
+        import os
+        env1['ENV']['PATH'] = env2['ENV']['PATH'] + os.pathsep + os.getcwd()
+        env2['ENV']['PATH'] = env2['ENV']['PATH'] + os.pathsep + os.getcwd()
+        </file>
+        <file name="file1.input">
+        file1.input
+        </file>
+        <file name="file2.input">
+        file2.input
+        </file>
+        <file name="modify1.in">
+        modify1.input
+        </file>
+        <file name="modify2.in">
+        modify2.input
+        </file>
+        <file name="my_command" chmod="0755">
+        cat
+        </file>
+      </file>
+
+    </scons_example>
+
+    <sconstruct>
+      bld = Builder(action = 'my_command $SOURCES > $TARGET',
+                    suffix = '.foo',
+                    src_suffix = '.input',
+                    emitter = '$MY_EMITTER')
+      def modify1(target, source, env):
+          return target, source + ['modify1.in']
+      def modify2(target, source, env):
+          return target, source + ['modify2.in']
+      env1 = Environment(BUILDERS = {'Foo' : bld},
+                         MY_EMITTER = modify1)
+      env2 = Environment(BUILDERS = {'Foo' : bld},
+                         MY_EMITTER = modify2)
+      env1.Foo('file1')
+      env2.Foo('file2')
+      </file>
+    </sconstruct>
+
+    <para>
+
+    In this example, the <filename>modify1.in</filename>
+    and <filename>modify2.in</filename> files
+    get added to the source lists
+    of the different commands:
+
+    </para>
+
+    <scons_output example="MY_EMITTER">
+      <scons_output_command>scons -Q</scons_output_command>
+    </scons_output>
 
   </section>