JehanneOS/mksh
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• protect POSIX builtins and utilities from aliases, e.g:

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‣ : → \:
  ‣ alias → \alias
    ⇒ except in some internally used cases, where we use \builtin alias
  ‣ command . → \command .
• protect Korn Shell builtins from aliases and functions, e.g:
  ‣ typeset → \builtin typeset
    ⇒ also unravels the “local” alias used
  ‣ print → \builtin print
• protect internally-used things from aliases
  ‣ “let]” is not a valid function name
  ‣ “set” is POSIX so we don’t expect anyone to override it in a function
• use “command -v” instead of “whence -p” (“which”) in most
  places; thanks izabera from #ed on IRC for pointing out
  that “command -v” is POSIX – except, “whence -p” a̲l̲w̲a̲y̲s̲ looks
  for an executable and shows its full pathname; “command -v”
  also resolves to aliases, functions and builtins, so only use
  it where it makes any sense (both never output to stderr)
• make most of dot.mkshrc work in the face of such aliases
  ‣ “ulimit -c” is used; this is not POSIX, and not portable;
    maybe we should make ulimit accept-and-ignore the most
    common limits even if the OS doesn’t use them?
• update list of builtin aliases in the manpage
This commit is contained in:
tg
2015-03-08 22:54:36 +00:00
parent fcc59eee48
commit 8f53c68265
7 changed files with 277 additions and 301 deletions
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9
sh.h
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@@ -169,9 +169,9 @@
#endif
#ifdef EXTERN
__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.716 2015/03/08 21:30:22 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.717 2015/03/08 22:54:35 tg Exp $");
#endif
#define MKSH_VERSION "R50 2015/03/07"
#define MKSH_VERSION "R50 2015/03/08"
/* arithmetic types: C implementation */
#if !HAVE_CAN_INTTYPES
@@ -802,9 +802,8 @@ EXTERN const char Toomem[] E_INIT("can't allocate %zu data bytes");
EXTERN const char Tsynerr[] E_INIT("syntax error");
#endif
EXTERN const char Tselect[] E_INIT("select");
EXTERN const char Tlocal_typeset[] E_INIT("local=typeset");
#define T_typeset (Tlocal_typeset + 5) /* "=typeset" */
#define Ttypeset (Tlocal_typeset + 6) /* "typeset" */
EXTERN const char T_typeset[] E_INIT("=typeset");
#define Ttypeset (T_typeset + 1) /* "typeset" */
EXTERN const char Talias[] E_INIT("alias");
EXTERN const char Tunalias[] E_INIT("unalias");
EXTERN const char Tsgset[] E_INIT("*=set");