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authorGravatar Ron Yorston <rmy@pobox.com>2021-04-15 12:06:51 +0100
committerGravatar Denys Vlasenko <vda.linux@googlemail.com>2021-04-15 13:09:12 +0200
commitf2277268384d47fbcaba081f19cebc68de819836 (patch)
treeadee727cf5f81119c1d93bd1e1c9981d095fd985 /miscutils/makedevs.c
parent47f78913f7576596d44c602a015735cb9c49f4f0 (diff)
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vi: allow line addresses to have an offsetHEADmaster
Line addresses in colon commands can be defined using an expression that includes '+' or '-' operators. The implementation follows traditional vi: - The first term in the expression defines an address. It can be an absolute line number, '.', '$', a search or a marker. - The second and subsequent terms must be non-negative integers. - If the first term is missing '.' is assumed. If the operator is missing addition is assumed. If the final term in missing an offset of 1 is assumed. Thus the following are valid addresses: .+1 .+ + .1 .-1 .- - The following are not valid (though they are in vim): .+$ .$ 2+. function old new delta colon 3701 3844 +143 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/0 up/down: 143/0) Total: 143 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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