Using > or < in the provides array is wrong so make it cause an error.
Fixes FS#12540.

Also, use bash substitution rather than spawning new processes where
possible in the error checking.  Move split package detection to a
better position.

Signed-off-by: Allan McRae <[email protected]>
---
 doc/PKGBUILD.5.txt    |    4 +++-
 scripts/makepkg.sh.in |   20 ++++++++++++++------
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/doc/PKGBUILD.5.txt b/doc/PKGBUILD.5.txt
index f90d8c0..6cc1aa9 100644
--- a/doc/PKGBUILD.5.txt
+++ b/doc/PKGBUILD.5.txt
@@ -160,7 +160,9 @@ name. The syntax is: `$$source=('filename::url')$$`
        depend on 'cron' rather than 'dcron OR fcron'.
        Versioned provisions are also possible, in the 'name=version' format.
        For example, dcron can provide 'cron=2.0' to satisfy the 'cron>=2.0'
-       dependency of other packages.
+       dependency of other packages. Provisions involving the '>' and '<'
+       operators are invalid as only specifc versions of a package may be
+       provided.
 
 *replaces (array)*::
        An array of packages that this package should replace, and can be used
diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index 66aaa5e..3b7490a 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -1574,6 +1574,10 @@ if [ "$GENINTEG" = "1" ]; then
        exit 0 # $E_OK
 fi
 
+if [ "${#pkgna...@]}" -gt "1" ]; then
+       SPLITPKG=1
+fi
+
 # check for no-no's in the build script
 if [ -z "$pkgname" ]; then
        error "$(gettext "%s is not allowed to be empty.")" "pkgname"
@@ -1587,19 +1591,15 @@ if [ -z "$pkgrel" ]; then
        error "$(gettext "%s is not allowed to be empty.")" "pkgrel"
        exit 1
 fi
-if [ $(echo "$pkgver" | grep '-') ]; then
+if [ $pkgver != ${pkgver//-/} ]; then
        error "$(gettext "%s is not allowed to contain hyphens.")" "pkgver"
        exit 1
 fi
-if [ $(echo "$pkgrel" | grep '-') ]; then
+if [ $pkgrel != ${pkgrel//-/} ]; then
        error "$(gettext "%s is not allowed to contain hyphens.")" "pkgrel"
        exit 1
 fi
 
-if [ "${#pkgna...@]}" -gt "1" ]; then
-       SPLITPKG=1
-fi
-
 if [ "$arch" = 'any' ]; then
        CARCH='any'
 fi
@@ -1613,6 +1613,14 @@ if ! in_array $CARCH ${ar...@]}; then
        fi
 fi
 
+for provide in ${provid...@]}; do
+       if [ $provide != ${provide//</} -o $provide != ${provide//>/} ]; then
+               error "$(gettext "%s is not allowed to contain comparisons 
involving the > or < operators.")" "provides"
+               exit 1
+       fi
+done
+unset provide
+
 if [ "$install" -a ! -f "$install" ]; then
        error "$(gettext "Install scriptlet (%s) does not exist.")" "$install"
        exit 1
-- 
1.6.1

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