test -lt inconsistent about white space

[Paul Eggert]

Consider the following shell script 'doit':

sp=' '
nl='
'
test "${sp}1${sp}" -lt "${sp}2${sp}"
test "${nl}3${sp}" -lt "${nl}4${sp}"
test "${sp}5${nl}" -lt "${sp}6${nl}"
test "${nl}7${nl}" -lt "${nl}8${nl}"

Running the command "bash doit" outputs:

doit: line 6: test:  5
: integer expression expected
doit: line 7: test:
7
: integer expression expected

The problem occurs because strtoimax accepts all forms of leading 
whitespace, whereas Bash accepts only space and tab after the integer. 
This is inconsistent: Bash should treat trailing whitespace the same way 
it treats leading whitespace, and should accept all of doit's 'test' 
commands, as Dash does.

Proposed patch attached.

0001-fix-inconsistency-when-parsing-integers.patch
Description: Text Data