Public bug reported:
The following substring expansion to get the first word of a string
separated by spaces doesn't work using dash 0.5.8-2.10 on Ubuntu 18.04
LTS:
string="one two three four"
first="${string%%' '*}"
printf "%s\n" "$first"
It prints "one two three four", instead of "one". This works on bash and
Solaris sh, but not in dash.
Oddly, not putting the white space between single quotes works:
string="one two three four"
first="${string%% *}"
printf "%s\n" "$first" # Prints "one"
** Affects: dash (Ubuntu)
Importance: Undecided
Status: New
** Tags: bionic
** Tags added: bionic
** Summary changed:
- Parameter expansion "${string%%' '*}" doesn't work
+ Substring expansion "${string%%' '*}" doesn't work
** Description changed:
- The following parameter expansion to get the first word of a string
+ The following substring expansion to get the first word of a string
separated by spaces doesn't work using dash 0.5.8-2.10 on Ubuntu 18.04
LTS:
string="one two three four"
first="${string%%' '*}"
printf "%s\n" "$first"
It prints "one two three four", instead of "one". This works on bash and
Solaris sh, but not in dash.
** Description changed:
The following substring expansion to get the first word of a string
separated by spaces doesn't work using dash 0.5.8-2.10 on Ubuntu 18.04
LTS:
string="one two three four"
first="${string%%' '*}"
printf "%s\n" "$first"
It prints "one two three four", instead of "one". This works on bash and
Solaris sh, but not in dash.
+
+ Oddly, not putting the white space between single quotes works:
+ string="one two three four"
+ first="${string%% *}"
+ printf "%s\n" "$first" # Prints "one"
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https://bugs.launchpad.net/bugs/1833817
Title:
Substring expansion "${string%%' '*}" doesn't work
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