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Diffstat (limited to 'test/widesub4.awk')
| -rw-r--r-- | test/widesub4.awk | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/test/widesub4.awk b/test/widesub4.awk new file mode 100644 index 00000000..c917aacb --- /dev/null +++ b/test/widesub4.awk @@ -0,0 +1,54 @@ +# Date: Sun, 28 May 2006 11:20:58 +0200 +# From: Frantisek Hanzlik <franta@hanzlici.cz> +# Subject: sub() function do'nt alter string length in awk 3.1.5 +# To: bug-gawk@gnu.org +# Message-id: <44796B7A.3050908@hanzlici.cz> +# +# Hello, +# I not know when it is my mistake or gawk bug - in simple example below +# I delete some chars from string variable, and after this string is +# modified, but its length is unchanged. +# +# awk 'BEGIN{A="1234567890abcdef"; +# for (i=1;i<6;i++){print length(A),"A=" A ".";sub("....","",A)} +# }' +# 16 A=1234567890abcdef. +# 16 A=567890abcdef. +# 16 A=90abcdef. +# 16 A=cdef. +# 16 A=. +# +# When I use gensub() instead of sub(), result is as I expected: +# +# awk 'BEGIN{A="1234567890abcdef"; +# for (i=1;i<6;i++){print length(A),"A=" A ".";A=gensub("....","",1,A)} +# }' +# 16 A=1234567890abcdef. +# 12 A=567890abcdef. +# 8 A=90abcdef. +# 4 A=cdef. +# 0 A=. +# +# OS/GAWK versions: +# - GNU/Linux kernel 2.6.16-1.2122_FC5 #1 i686, Fedora Core 5 distro +# - glibc-2.4-8 +# - GNU Awk 3.1.5 +# +# Yours sincerely +# Frantisek Hanzlík +# +# == Lucní 502 Linux/Unix, Novell, Internet Tel: +420-373729699 == +# == 33209 Stenovice e-mail:franta@hanzlici.cz Fax: +420-373729699 == +# == Czech Republic http://hanzlici.cz/ GSM: +420-604117319 == +# +# +# +# ##################################################################################### +# This Mail Was Scanned by 012.net AntiVirus Service3- Powered by TrendMicro Interscan +# +BEGIN{A="1234567890abcdef"; + for (i=1;i<6;i++){print length(A),"A=" A ".";sub("....","",A)} +} +BEGIN{A="1234567890abcdef"; + for (i=1;i<6;i++){print length(A),"A=" A ".";A=gensub("....","",1,A)} +} |