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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2018-03-09 00:14:02 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-03-22 00:29:58 +0800 |
| commit | ab1cecb4047864afb247a6ed691e7f59ce716f2c (patch) | |
| tree | 4e4914acd4854f273fa7da4af24f7b86c83672fd /src/funcs | |
| parent | parser: use pgetc_eatbnl() in more places (diff) | |
| download | dash-ab1cecb4047864afb247a6ed691e7f59ce716f2c.tar.gz dash-ab1cecb4047864afb247a6ed691e7f59ce716f2c.zip | |
parser: Add syntax stack for recursive parsing
Without a stack of syntaxes we cannot correctly these two cases
together:
"${a#'$$'}"
"${a#"${b-'$$'}"}"
A recursive parser also helps in some other corner cases such
as nested arithmetic expansion with paratheses.
This patch adds a syntax stack allocated from the stack using
alloca. As a side-effect this allows us to remove the naked
backslashes for patterns within double-quotes, which means that
EXP_QPAT also has to go.
This patch also fixes removes any backslashes that precede right
braces when they are present within a parameter expansion context,
and backslashes that precede double quotes within inner double
quotes inside a parameter expansion in a here-document context.
The idea of a recursive parser is based on a patch by Harald van
Dijk.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'src/funcs')
0 files changed, 0 insertions, 0 deletions