[LON-CAPA-cvs] cvs: loncom /cgi/mimeTeX commands loncapanewcommands.h

[foxr]

foxr		Tue Jul 15 06:49:04 2008 EDT

  Added files:                 
    /loncom/cgi/mimeTeX	loncapanewcommands.h 

  Modified files:              
    /loncom/cgi/mimeTeX	commands 
  Log:
  bz5632 - add support to render the following tex constructs in mimetex:
  \xleftarrow{x}  - x on top of a left arrow.
  \xrightarrow{x} - x on top of a left arrow.
  \xleftrightharpoons{x} - X on top of left/right harpoons.
  \autorightleftharpoons{x}{y} x on top, y below left right harpoons.
  
  This has been done by using a supported mimetex extension for defining
  latex macros and using the constructs suggested by Ray Batchelor in the
  original request. Therefore
  - New file: loncapanewcommands.h 
  - Modified commands to define NEWCOMMANDS such that loncapanewcommands.h
   is included by mimetex in its macro definition sections.
  
  No changes to mimetex.c were required... this is a supported way to add 
  extensions to mimetex.
  
  
Index: loncom/cgi/mimeTeX/commands
diff -u loncom/cgi/mimeTeX/commands:1.1 loncom/cgi/mimeTeX/commands:1.2
--- loncom/cgi/mimeTeX/commands:1.1	Mon Feb 28 14:08:11 2005
+++ loncom/cgi/mimeTeX/commands	Tue Jul 15 06:49:02 2008
@@ -1,3 +1,4 @@
 #!/bin/sh
-cc -DAA -DCACHEPATH=\"mimetexcache/\" mimetex.c gifsave.c -lm -o mimetex.cgi
+cc -DAA -DCACHEPATH=\"mimetexcache/\" -DNEWCOMMANDS="\"loncapanewcommands.h\"" \
+    mimetex.c gifsave.c -lm -o mimetex.cgi
 

Index: loncom/cgi/mimeTeX/loncapanewcommands.h
+++ loncom/cgi/mimeTeX/loncapanewcommands.h
/*    macro                  argcnt          substitution   */
{ "\\xleftarrow",            "1", "{\\overset{#1}{\\leftarrow}}" },
{ "\\xrightarrow",           "1", "{\\overset{#1}{\\rightarrow}}" },
{ "\\xrightleftharpoons",    "1", "{\\overset{#1}{\\rightleftharpoons}}"},
{ "\\autorightleftharpoons", "2", "{\\overset{#1}{\\underset{#2}{\\rightleftharpoons}}}"},