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commit bash-20190621 snapshot

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Chet Ramey
2019-06-24 09:00:06 -04:00
parent 48492ffae2
commit 602eae4d6b
31 changed files with 8398 additions and 8186 deletions
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POSIX
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@@ -173,62 +173,66 @@ The following list is what's changed when 'POSIX mode' is in effect:
option, so numeric arguments to 'shift' that exceed the number of
positional parameters will result in an error message.
45. When the 'alias' builtin displays alias definitions, it does not
45. Enabling POSIX mode has the effect of setting the 'posixglob'
option, which affects how unquoted backslashes are treated during
filename expansion (*note Filename Expansion::).
46. When the 'alias' builtin displays alias definitions, it does not
display them with a leading 'alias ' unless the '-p' option is
supplied.
46. When the 'set' builtin is invoked without options, it does not
47. When the 'set' builtin is invoked without options, it does not
display shell function names and definitions.
47. When the 'set' builtin is invoked without options, it displays
48. When the 'set' builtin is invoked without options, it displays
variable values without quotes, unless they contain shell
metacharacters, even if the result contains nonprinting characters.
48. When the 'cd' builtin is invoked in LOGICAL mode, and the pathname
49. When the 'cd' builtin is invoked in LOGICAL mode, and the pathname
constructed from '$PWD' and the directory name supplied as an
argument does not refer to an existing directory, 'cd' will fail
instead of falling back to PHYSICAL mode.
49. When the 'cd' builtin cannot change a directory because the length
50. When the 'cd' builtin cannot change a directory because the length
of the pathname constructed from '$PWD' and the directory name
supplied as an argument exceeds PATH_MAX when all symbolic links
are expanded, 'cd' will fail instead of attempting to use only the
supplied directory name.
50. The 'pwd' builtin verifies that the value it prints is the same as
51. The 'pwd' builtin verifies that the value it prints is the same as
the current directory, even if it is not asked to check the file
system with the '-P' option.
51. When listing the history, the 'fc' builtin does not include an
52. When listing the history, the 'fc' builtin does not include an
indication of whether or not a history entry has been modified.
52. The default editor used by 'fc' is 'ed'.
53. The default editor used by 'fc' is 'ed'.
53. The 'type' and 'command' builtins will not report a non-executable
54. The 'type' and 'command' builtins will not report a non-executable
file as having been found, though the shell will attempt to execute
such a file if it is the only so-named file found in '$PATH'.
54. The 'vi' editing mode will invoke the 'vi' editor directly when
55. The 'vi' editing mode will invoke the 'vi' editor directly when
the 'v' command is run, instead of checking '$VISUAL' and
'$EDITOR'.
55. When the 'xpg_echo' option is enabled, Bash does not attempt to
56. When the 'xpg_echo' option is enabled, Bash does not attempt to
interpret any arguments to 'echo' as options. Each argument is
displayed, after escape characters are converted.
56. The 'ulimit' builtin uses a block size of 512 bytes for the '-c'
57. The 'ulimit' builtin uses a block size of 512 bytes for the '-c'
and '-f' options.
57. The arrival of 'SIGCHLD' when a trap is set on 'SIGCHLD' does not
58. The arrival of 'SIGCHLD' when a trap is set on 'SIGCHLD' does not
interrupt the 'wait' builtin and cause it to return immediately.
The trap command is run once for each child that exits.
58. The 'read' builtin may be interrupted by a signal for which a trap
59. The 'read' builtin may be interrupted by a signal for which a trap
has been set. If Bash receives a trapped signal while executing
'read', the trap handler executes and 'read' returns an exit status
greater than 128.
59. Bash removes an exited background process's status from the list
60. Bash removes an exited background process's status from the list
of such statuses after the 'wait' builtin is used to obtain it.
There is other POSIX behavior that Bash does not implement by default