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new `patsub_replacement' shell option

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Chet Ramey
2021-10-25 11:56:15 -04:00
parent 2c8ac78cbb
commit c813e24652
9 changed files with 869 additions and 771 deletions
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doc/bashref.texi
+9 -1
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@@ -2440,7 +2440,8 @@ If @var{string} is null,
matches of @var{pattern} are deleted
and the @samp{/} following @var{pattern} may be omitted.
Any unquoted instances of @samp{&} in @var{string} are replaced with the
If the @code{patsub_replacement} shell option is enabled using @code{shopt},
any unquoted instances of @samp{&} in @var{string} are replaced with the
matching portion of @var{pattern}.
This is intended to duplicate a common @code{sed} idiom.
Backslash is used to quote @samp{&} in @var{string}; the backslash is removed
@@ -5786,6 +5787,13 @@ If the string is not translated, this has no effect.
If set, Bash allows filename patterns which match no
files to expand to a null string, rather than themselves.
@item patsub_replacement
If set, Bash
expands occurrences of @samp{&} in the replacement string of pattern
substitution to the text matched by the pattern, as described
above (@pxref{Shell Parameter Expansion}).
This option is enabled by default.
@item progcomp
If set, the programmable completion facilities
(@pxref{Programmable Completion}) are enabled.