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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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@@ -1932,27 +1932,29 @@ EEXXPPAANNSSIIOONN
PPaatthhnnaammee EExxppaannssiioonn
After word splitting, unless the --ff option has been set, bbaasshh scans
each word for the characters **, ??, and [[. If one of these characters
appears, then the word is regarded as a _p_a_t_t_e_r_n, and replaced with an
alphabetically sorted list of filenames matching the pattern (see PPaatt--
tteerrnn MMaattcchhiinngg below). If no matching filenames are found, and the
shell option nnuullllgglloobb is not enabled, the word is left unchanged. If
the nnuullllgglloobb option is set, and no matches are found, the word is
removed. If the ffaaiillgglloobb shell option is set, and no matches are
found, an error message is printed and the command is not executed. If
the shell option nnooccaasseegglloobb is enabled, the match is performed without
regard to the case of alphabetic characters. When a pattern is used
for pathname expansion, the character ````..'''' at the start of a name or
immediately following a slash must be matched explicitly, unless the
shell option ddoottgglloobb is set. The filenames ````..'''' and ````....'''' must
always be matched explicitly, even if ddoottgglloobb is set. In other cases,
the ````..'''' character is not treated specially. When matching a path-
name, the slash character must always be matched explicitly by a slash
in the pattern, but in other matching contexts it can be matched by a
special pattern character as described below under PPaatttteerrnn MMaattcchhiinngg.
See the description of sshhoopptt below under SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS for a
description of the nnooccaasseegglloobb, nnuullllgglloobb, ffaaiillgglloobb, and ddoottgglloobb shell
options.
each word for the characters **, ??, [[, and, under certain circumstances
(e.g., when it appears in the expansion of an unquoted shell variable,
depending on the setting of the ppoossiixxgglloobb shell option), \\. If one of
these characters appears, then the word is regarded as a _p_a_t_t_e_r_n, and
replaced with an alphabetically sorted list of filenames matching the
pattern (see PPaatttteerrnn MMaattcchhiinngg below). If no matching filenames are
found, and the shell option nnuullllgglloobb is not enabled, the word is left
unchanged. If the nnuullllgglloobb option is set, and no matches are found,
the word is removed. If the ffaaiillgglloobb shell option is set, and no
matches are found, an error message is printed and the command is not
executed. If the shell option nnooccaasseegglloobb is enabled, the match is per-
formed without regard to the case of alphabetic characters. When a
pattern is used for pathname expansion, the character ````..'''' at the
start of a name or immediately following a slash must be matched
explicitly, unless the shell option ddoottgglloobb is set. The filenames
````..'''' and ````....'''' must always be matched explicitly, even if ddoottgglloobb
is set. In other cases, the ````..'''' character is not treated specially.
When matching a pathname, the slash character must always be matched
explicitly by a slash in the pattern, but in other matching contexts it
can be matched by a special pattern character as described below under
PPaatttteerrnn MMaattcchhiinngg. See the description of sshhoopptt below under SSHHEELLLL
BBUUIILLTTIINN CCOOMMMMAANNDDSS for a description of the nnooccaasseegglloobb, nnuullllgglloobb, ffaaiill--
gglloobb, and ddoottgglloobb shell options.
The GGLLOOBBIIGGNNOORREE shell variable may be used to restrict the set of file
names matching a _p_a_t_t_e_r_n. If GGLLOOBBIIGGNNOORREE is set, each matching file
@@ -2457,15 +2459,17 @@ AARRIITTHHMMEETTIICC EEVVAALLUUAATTIIOONN
to 0. A shell variable need not have its _i_n_t_e_g_e_r attribute turned on
to be used in an expression.
Constants with a leading 0 are interpreted as octal numbers. A leading
0x or 0X denotes hexadecimal. Otherwise, numbers take the form
[_b_a_s_e_#]n, where the optional _b_a_s_e is a decimal number between 2 and 64
representing the arithmetic base, and _n is a number in that base. If
_b_a_s_e_# is omitted, then base 10 is used. When specifying _n, the digits
greater than 9 are represented by the lowercase letters, the uppercase
letters, @, and _, in that order. If _b_a_s_e is less than or equal to 36,
lowercase and uppercase letters may be used interchangeably to repre-
sent numbers between 10 and 35.
Integer constants follow the C language definition, without suffixes or
character constants. Constants with a leading 0 are interpreted as
octal numbers. A leading 0x or 0X denotes hexadecimal. Otherwise,
numbers take the form [_b_a_s_e_#]n, where the optional _b_a_s_e is a decimal
number between 2 and 64 representing the arithmetic base, and _n is a
number in that base. If _b_a_s_e_# is omitted, then base 10 is used. When
specifying _n, if a non-digit is required, the digits greater than 9 are
represented by the lowercase letters, the uppercase letters, @, and _,
in that order. If _b_a_s_e is less than or equal to 36, lowercase and
uppercase letters may be used interchangeably to represent numbers
between 10 and 35.
Operators are evaluated in order of precedence. Sub-expressions in
parentheses are evaluated first and may override the precedence rules
@@ -5776,6 +5780,12 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
If set, bbaasshh allows patterns which match no files (see
PPaatthhnnaammee EExxppaannssiioonn above) to expand to a null string,
rather than themselves.
ppoossiixxgglloobb
If set, bbaasshh makes words containing unquoted backslashes
after expansion eligible for pathname expansion, even if
they don't contain any other unquoted pattern charac-
ters. This option is enabled by default, and is enabled
when _p_o_s_i_x _m_o_d_e is enabled.
pprrooggccoommpp
If set, the programmable completion facilities (see PPrroo--
ggrraammmmaabbllee CCoommpplleettiioonn above) are enabled. This option is
@@ -6182,4 +6192,4 @@ BBUUGGSS
GNU Bash 5.0 2019 May 20 BASH(1)
GNU Bash 5.0 2019 June 21 BASH(1)