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read -S now correctly handles nested double quotes

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Prior to this bugfix, the following set of commands would
fail to print two double quotes:

IFS=',' read -S a b c <<<'foo,"""title"" data",bar'
echo $b

This fix is from ksh93v- 2013-10-10-alpha, although it has
been revised to use stakputc to put the required double quote
into the buffer for consistency with the ksh93u+ codebase.

src/cmd/ksh93/bltins/read.c:
 - When handling nested double quotes, put the required double
   quote in read's buffer with stakputc.

src/cmd/ksh93/tests/builtins.sh:
 - Add the regression test for `read -S` from ksh93v-.

src/cmd/ksh93/sh.1:
 - Fix a minor formatting error to highlight '-S' in the ksh(1)
   man page.
This commit is contained in:
Johnothan King 2020-06-14 09:28:22 -07:00
parent 5498d9ec25
commit af0bd6ad70
5 changed files with 21 additions and 3 deletions
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3
src/cmd/ksh93/sh.1
View file

@ -6679,7 +6679,8 @@ option causes the variable
.I vname\^
to be read as a compound variable. Blanks will be ignored when
finding the beginning open parenthesis.
The \-S
The
.B \-S
option causes the line to be treated like a record in a
.B .csv
format file so that double quotes can be used to allow the delimiter