diff options
Diffstat (limited to 'Doc/Zsh')
| -rw-r--r-- | Doc/Zsh/compat.yo | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/Doc/Zsh/compat.yo b/Doc/Zsh/compat.yo index 529bd4557..619a81f79 100644 --- a/Doc/Zsh/compat.yo +++ b/Doc/Zsh/compat.yo @@ -7,7 +7,15 @@ cindex(compatibility) cindex(sh, compatibility) cindex(ksh, compatibility) Zsh tries to emulate bf(sh) or bf(ksh) when it is invoked as -tt(sh) or tt(ksh) respectively. In this mode the following +tt(sh) or tt(ksh) respectively; more precisely, it looks at the first +letter of the name by which it was invoked, excluding any initial `tt(r)' +(assumed to stand for `restricted'), and if that is `tt(s)' or `tt(k)' it +will emulate bf(sh) or bf(ksh). Furthermore, if invoked as tt(su) (which +happens on certain systems when the shell is executed by the tt(su) +command), the shell will try to find an alternative name from the tt(SHELL) +environment variable and perform emulation based on that. + +In bf(sh) and bf(ksh) compatibility modes the following parameters are not special and not initialized by the shell: tt(ARGC), tt(argv), @@ -32,9 +40,9 @@ The usual zsh startup/shutdown scripts are not executed. Login shells source tt(/etc/profile) followed by tt($HOME/.profile). If the tt(ENV) environment variable is set on invocation, tt($ENV) is sourced after the profile scripts. The value of tt(ENV) is subjected to -parameter expansion, command substitution, and arithmetic expansion before -being interpreted as a pathname. Note that the tt(PRIVILEGED) option -also affects the execution of startup files. +parameter expansion, command substitution, and arithmetic expansion +before being interpreted as a pathname. Note that the tt(PRIVILEGED) +option also affects the execution of startup files. The following options are set if the shell is invoked as tt(sh) or tt(ksh): @@ -44,6 +52,7 @@ tt(NO_BG_NICE), tt(NO_EQUALS), tt(NO_FUNCTION_ARGZERO), tt(GLOB_SUBST), +tt(NO_GLOBAL_EXPORT), tt(NO_HUP), tt(INTERACTIVE_COMMENTS), tt(KSH_ARRAYS), |