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(_AS_VERSION_COMPARE_PREPARE):

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The previous patch didn't work, so try a better one.
This commit is contained in:
Paul Eggert 2005-08-26 18:49:23 +00:00
parent f9f3b51d6f
commit 7385854c54
1 changed files with 7 additions and 3 deletions
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10
lib/m4sugar/m4sh.m4
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@ -1030,7 +1030,7 @@ m4_defun([_AS_VERSION_COMPARE_PREPARE],
# Use only awk features that work with 7th edition Unix awk (1978).
# My, what an old awk you have, Mr. Solaris!
END {
while (length(v1) || length(v2)) {
while (length(v1) && length(v2)) {
# Set d1 to be the next thing to compare from v1, and likewise for d2.
# Normally this is a single character, but if v1 and v2 contain digits,
# compare them as integers and fractions as strverscmp does.
@ -1074,12 +1074,16 @@ m4_defun([_AS_VERSION_COMPARE_PREPARE],
}
} else {
# The normal case, without worrying about digits.
if (length(v1)) { d1 = substr(v1, 1, 1); v1 = substr(v1,2) } else d1=v1
if (length(v2)) { d2 = substr(v2, 1, 1); v2 = substr(v2,2) } else d2=v2
d1 = substr(v1, 1, 1); v1 = substr(v1, 2)
d2 = substr(v2, 1, 1); v2 = substr(v2, 2)
}
if (d1 < d2) exit 1
if (d1 > d2) exit 2
}
# Beware Solaris /usr/xgp4/bin/awk (at least through Solaris 10),
# which mishandles some comparisons of empty strings to integers.
if (length(v2)) exit 1
if (length(v1)) exit 2
}
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