Feat: added if/else branching and switch statement

Unsure about my modification to the language. I found the parsing of the
case body within switches to be odd - specifically that it parses
liberally and then checks that it has case -> cmd structuring while it
walks the code. This means the language is more permissive than the
semantics. I modified it to be more explicit, but at the cost of having
to end each case statement with a semicolon. I wanted a colon, but this
is a valid word character and thus will be lexed as part of the word.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/cmd/rc/exec.h b/src/cmd/rc/exec.h
index a3a6ae9..78250f1 100644
--- a/src/cmd/rc/exec.h
+++ b/src/cmd/rc/exec.h
@@ -7,6 +7,7 @@
  * code in line with jump around {...}
  */
 
+void Xcase(void);
 void Xmark(void);           // Xmark            marks stack location for word
 void Xindex(void);          // Xindex
 void Xlocal(void);          // Xlocal(name,val) create local variable, assign value
@@ -22,6 +23,7 @@ void Xbang(void);
 void Xasync(void);
 void Xbasic(void);          // Xbasic(args) run command and wait for result
 void Xsubshell(void);
+void Xsettrue(void);
 void Xword(void);
 void Xjoin(void);
 void Xconcatenate(void);