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fix(field_splitting): ensure no extraneous spaces appear

Browse source 
debug notes:
= 250  !! OK ===================================================================
export HOLA="bonjour "
echo $HOLA | cat -e
= out =
bonjour $

= err =
rc: 0

= refout =
bonjour$

++++++++++++++++++++++++++++++++++++++++++++++++++++
failed: quote removal before word splitting
++++++++++++++++++++++++++++++++++++++++++++++++++++
++++ test input:
export VAR="hello "
echo $VAR | cat -e
++++ Got output:
hello $
++++ But expected:
hello$

Problem is in post-processing:
parsed command
 ╰─ t_cmd
     ├─ t_cmd_type = FT_SIMPLE
     ├─ flags = 0
     ├─ line = 0
     ╰─ value
         ╰─ t_simple_cmd
             ├─ line = 0
             ├─ t_wordlist
             │   ├─ t_worddesc
             │   │   ├─ word   = [echo]
             │   │   ├─ marker = [    ]
             │   │   ├─ flags = 0
             │   │   ╰─ t_token_type = WORD_TOKEN
             │   ╰─ t_worddesc
             │       ├─ word   = [$VAR]
             │       ├─ marker = [    ]
             │       ├─ flags = 1
             │       ╰─ t_token_type = WORD_TOKEN
             ╰─ redirections = (empty redir list)
about to post-process
 ╰─ t_simple_cmd
     ├─ line = 0
     ├─ t_wordlist
     │   ├─ t_worddesc
     │   │   ├─ word   = [echo]
     │   │   ├─ marker = [    ]
     │   │   ├─ flags = 0
     │   │   ╰─ t_token_type = WORD_TOKEN
     │   ╰─ t_worddesc
     │       ├─ word   = [$VAR]
     │       ├─ marker = [    ]
     │       ├─ flags = 1
     │       ╰─ t_token_type = WORD_TOKEN
     ╰─ redirections = (empty redir list)
about to post-process
 ╰─ t_simple_cmd
     ├─ line = 0
     ├─ t_wordlist
     │   ├─ t_worddesc
     │   │   ├─ word   = [echo]
     │   │   ├─ marker = [    ]
     │   │   ├─ flags = 0
     │   │   ╰─ t_token_type = WORD_TOKEN
     │   ╰─ t_worddesc
     │       ├─ word   = [hello ]
     │       ├─ marker = [$$$$$$]
     │       ├─ flags = 1
     │       ╰─ t_token_type = WORD_TOKEN
     ╰─ redirections = (empty redir list)
about to post-process
 ╰─ t_simple_cmd
     ├─ line = 0
     ├─ t_wordlist
     │   ├─ t_worddesc
     │   │   ├─ word   = [echo]
     │   │   ├─ marker = [    ]
     │   │   ├─ flags = 0
     │   │   ╰─ t_token_type = WORD_TOKEN
     │   ├─ t_worddesc
     │   │   ├─ word   = [hello]
     │   │   ├─ marker = [$$$$$]
     │   │   ├─ flags = 1
     │   │   ╰─ t_token_type = WORD_TOKEN
     │   ╰─ t_worddesc <---- WHAT IS THIS DOING HERE???
     │       ├─ word   = []
     │       ├─ marker = []
     │       ├─ flags = 1
     │       ╰─ t_token_type = WORD_TOKEN
     ╰─ redirections = (empty redir list)
about to post-process
 ╰─ t_simple_cmd
     ├─ line = 0
     ├─ t_wordlist
     │   ├─ t_worddesc
     │   │   ├─ word   = [echo]
     │   │   ├─ marker = [    ]
     │   │   ├─ flags = 0
     │   │   ╰─ t_token_type = WORD_TOKEN
     │   ├─ t_worddesc
     │   │   ├─ word   = [hello]
     │   │   ├─ marker = [$$$$$]
     │   │   ├─ flags = 1
     │   │   ╰─ t_token_type = WORD_TOKEN
     │   ╰─ t_worddesc
     │       ├─ word   = []
     │       ├─ marker = []
     │       ├─ flags = 1
     │       ╰─ t_token_type = WORD_TOKEN
     ╰─ redirections = (empty redir list)
about to execute
 ╰─ t_simple_cmd
     ├─ line = 0
     ├─ t_wordlist
     │   ├─ t_worddesc
     │   │   ├─ word   = [echo]
     │   │   ├─ marker = [(null)]
     │   │   ├─ flags = 0
     │   │   ╰─ t_token_type = WORD_TOKEN
     │   ├─ t_worddesc
     │   │   ├─ word   = [hello]
     │   │   ├─ marker = [(null)]
     │   │   ├─ flags = 1
     │   │   ╰─ t_token_type = WORD_TOKEN
     │   ╰─ t_worddesc
     │       ├─ word   = []
     │       ├─ marker = [(null)]
     │       ├─ flags = 1
     │       ╰─ t_token_type = WORD_TOKEN
     ╰─ redirections = (empty redir list)

Problem seems to be in field splitting
This commit is contained in:
Khaïs COLIN 2025-04-25 13:43:41 +02:00
parent 588b016f69
commit e5027323e1
2 changed files with 38 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

24
test.sh
View file

@ -1096,4 +1096,28 @@ expecting <<EOF
the answer is 42
EOF
when_run <<"EOF" "quote removal before word splitting"
export VAR="hello "
echo $VAR | cat -e
EOF
expecting <<"EOF"
hello$
EOF
when_run <<"EOF" "quote removal before word splitting"
export VAR=" hello world "
echo -$VAR- | cat -e
EOF
expecting <<"EOF"
- hello world -$
EOF
when_run <<"EOF" "quote removal before word splitting"
export VAR=" hello world "
echo "-$VAR-" | cat -e
EOF
expecting <<"EOF"
- hello world -$
EOF
finalize