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3 Commits

Author SHA1 Message Date
Denys Vlasenko
54bef2a8ef ash: eval: Fail immediately with redirections errors for simple command 
Upstream commit:

    Date: Sat, 19 May 2018 02:39:54 +0800
    eval: Fail immediately with redirections errors for simple command

    Previously, dash would continue to perform variable expansions
    even if a redirection error occured.  This patch changes it so
    that it fails immediately.

    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-02-20 09:36:51 +01:00
Denys Vlasenko
89e9d5534d hush: do not drop backslash from eval 'echo ok\' 
newer bash does not drop it, most other shells too

function                                             old     new   delta
unbackslash                                           39      57     +18
parse_stream                                        2753    2751      -2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 18/-2)              Total: 16 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-04-11 01:15:33 +02:00
Denys Vlasenko
41d8f10813 hush: fix corner cases with exec in empty expansions 
Cases like these:

var=val exec >redir

var=val `` >redir

function                                             old     new   delta
run_pipe                                            1701    1723     +22
redirect_and_varexp_helper                            56      55      -1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 22/-1)              Total: 21 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-04-05 14:41:21 +02:00