diff options
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | Doc/Zsh/mod_system.yo | 6 | ||||
| -rw-r--r-- | Doc/Zsh/params.yo | 15 | ||||
| -rw-r--r-- | Test/E03posix.ztst | 3 |
4 files changed, 17 insertions, 10 deletions
diff --git a/ChangeLog b/ChangeLog index 85132c36e..50f719fce 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2021-09-06 Bart Schaefer <schaefer@zsh.org> + * 48888: Doc/Zsh/mod_system.yo, Doc/Zsh/params.yo, Test/E03posix.ztst: + improve doc for $$ and $PPID, add fail test for PPID readonly-ness + * 48832: Completion/Unix/Type/_urls: try _gnu_generic first 2021-09-04 Oliver Kiddle <opk@zsh.org> diff --git a/Doc/Zsh/mod_system.yo b/Doc/Zsh/mod_system.yo index 8f525c576..399b6fe03 100644 --- a/Doc/Zsh/mod_system.yo +++ b/Doc/Zsh/mod_system.yo @@ -263,9 +263,9 @@ tt($$), which returns the process ID of the main shell process. ) item(tt(ppid))( vindex(ppid, sysparams) -Returns the process ID of the parent of the current process, even in -subshells. Compare tt($PPID), which returns the process ID of the parent -of the main shell process. +Returns the current process ID of the parent of the current process, even +in subshells. Compare tt($PPID), which returns the process ID of the +initial parent of the main shell process. ) item(tt(procsubstpid))( Returns the process ID of the last process started for process diff --git a/Doc/Zsh/params.yo b/Doc/Zsh/params.yo index dc28a45ae..b514eb072 100644 --- a/Doc/Zsh/params.yo +++ b/Doc/Zsh/params.yo @@ -654,10 +654,11 @@ Same as tt(#). ) vindex($) item(tt($) <S>)( -The process ID of this shell. Note that this indicates the original -shell started by invoking tt(zsh); all processes forked from the shells -without executing a new program, such as subshells started by -tt(LPAR())var(...)tt(RPAR()), substitute the same value. +The process ID of this shell, set when the shell initializes. Processes +forked from the shell without executing a new program, such as command +substitutions and commands grouped with tt(LPAR())var(...)tt(RPAR()), +are subshells that duplicate the current shell, and thus substitute the +same value for tt($$) as their parent shell. ) vindex(-) item(tt(-) <S>)( @@ -817,9 +818,9 @@ The operating system, as determined at compile time. ) vindex(PPID) item(tt(PPID) <S>)( -The process ID of the parent of the shell. As for tt($$), the -value indicates the parent of the original shell and does not -change in subshells. +The process ID of the parent of the shell, set when the shell initializes. +As with tt($$), the value does not change in subshells created as a +duplicate of the current shell. ) vindex(PWD) item(tt(PWD))( diff --git a/Test/E03posix.ztst b/Test/E03posix.ztst index 7db4c0c84..564afac29 100644 --- a/Test/E03posix.ztst +++ b/Test/E03posix.ztst @@ -161,3 +161,6 @@ F:POSIX has neither math functions nor floating point 0f:Width of %s is computed in bytes not characters F:This is considered a bugfix in zsh >< Stéphane> + + PPID=foo +-f:PPID is not a readonly variable |