#1312: runghc doesn't respect -main-is
-------------------------+--------------------------------------------------
Reporter: simonmar | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 6.8
Component: Compiler | Version: 6.6.1
Severity: minor | Resolution:
Keywords: | Difficulty: Easy (1 hr)
Os: Unknown | Testcase:
Architecture: Multiple |
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Comment (by Isaac Dupree):
Other unix programs' example -e behavior (well, at least in the GNU
versions):
{{{
#sed: run the two expressions in sequence (for each line)
echo 123 | sed -e 's/1/2/g' -e 's/2/4/g'
443
}}}
{{{
#grep: any -e argument has to match (for each line)
echo 123 | grep -e 12 -e 24
123
}}}
On the other hand, the same programs ''also'' split their expression
arguments into lines and treat the separate lines as if they were separate
arguments to separate -e's. Personally I'd rather not have this unix
behavior :)
{{{
printf '5\n3\n12\n' | grep -e "$(printf '12\n3')"
3
12
}}}
{{{
#sed's syntax is _designed_ to have scripts where the lines are sequenced
#(unlike Haskell's expression syntax)
printf '5\n3\n12\n' | sed -e "$(printf 's/1/2/g\ns/2/4/g')"
5
3
44
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1312>
GHC <http://www.haskell.org/ghc/>
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