🚀 go-pugleaf

Changes to build bash-1.12 under SCO Unix 3.2v4.0:

In the M_UNIX section of machines.h:

#    if !defined (HAVE_GCC)
#      define REQUIRED_LIBRARIES -lPW -lmalloc -lc_s
#    endif /* !HAVE_GCC */

SCO Unix has alloca() in -lPW.
malloc pulls in a faster malloc than the one in -lc
-lc_s uses a shared library version of the c runtimes

jobs.c:

The ' #if defined (SCO) ' sections make bash hang on the call to waitpid.
I removed the SCO conditional code, and bash no longer hangs.
Apparently, SCO fixed the sigsuspend() call in 3.2v4.0, and somehow broke
something that the workaround uses.

lib/readline/readline.c:

*** readline.c-	Mon Jan 25 15:21:13 1993
--- readline.c	Tue Jan 26 14:29:50 1993
***************
*** 4530,4533 ****
--- 4530,4537 ----
    int reverse = (direction < 0);
  
+ #if 1
+   int pre_search = 0;
+ #endif
+ 
    /* Create an arrary of pointers to the lines that we want to search. */
    maybe_replace_line ();
***************
*** 4560,4565 ****
--- 4564,4576 ----
  
    /* Initialize search parameters. */
+ #if 1
+   strncpy(search_string, the_line, 127);
+   search_string[127] = '\0';
+   search_string_index = strlen(search_string);
+   if (direction < 0 && rl_point > 0) { pre_search = 1; rl_point = 0; }
+ #else
    *search_string = '\0';
    search_string_index = 0;
+ #endif
  
    /* Normalize DIRECTION into 1 or -1. */
***************
*** 4576,4579 ****
--- 4587,4593 ----
    while (!done)
      {
+ #if 1
+       if (pre_search) { c = -1; pre_search = 0; } else
+ #endif
        c = rl_read_key ();
  
So history searches start with the text already on the line as the pattern.


changes for SCO Xenix 2.3.3:

machines.h:

Xenix 2.3 should not use -DREVERSED_SETVBUF_ARGS.
Only Xenix 2.2 has them reversed.

Xenix 2.3 does not have getwd(), and should #undef HAVE_GETWD.

readline.c:

Added Xenix to list of systems that #undef HAVE_BSD_SIGNALS.

----------------------------------------

How hard would it be to add
((...))  (for quoted expressions, equivalent to let "...") and
[[...]]  (shorthand for test. evaluates an expression and returns 0 for true)
These two changes would allow bash to run more ksh scripts.


William Bader
Software Consulting Services
3162 Bath Pike
Nazareth, PA  18064
phone: 215-837-8485
fax:   215-837-8080
email: wbader@scarecrow.csee.lehigh.edu,
       wbader@einstein.mse.lehigh.edu,
       lehi3b15.csee.lehigh.edu!batman!bader