special character behavior in LIKE pattern

[ken3]

[OS] CentOS 7.7.1908
[go version] go1.13.3 linux/amd64

input file is sample.txt

case 1, case2 and case 3 should cause the same result, but case 2 does not.

case 1 (expected): $ cat sample.txt|csvq -n "select * where c1 like '%i686'"
+--------------------------------+
| c1 |
+--------------------------------+
| glibc-2.28-9.fc29.i686 |
| glibc-devel-2.28-9.fc29.i686 |
| glibc-headers-2.28-9.fc29.i686 |
| gpm-devel-1.20.7-6.el7.i686 |
| gpm-libs-1.20.7-6.el7.i686 |
+--------------------------------+

case 2 (unexpected): $ cat sample.txt|csvq -n "select * where c1 like '%i_86'"
+------------------------------+
| c1 |
+------------------------------+
| gpm-devel-1.20.7-6.el7.i686 |
+------------------------------+

case 3 (expected): $ cat sample.txt|csvq -n "select * where c1 like '%.i_86'"
+--------------------------------+
| c1 |
+--------------------------------+
| glibc-2.28-9.fc29.i686 |
| glibc-devel-2.28-9.fc29.i686 |
| glibc-headers-2.28-9.fc29.i686 |
| gpm-devel-1.20.7-6.el7.i686 |
| gpm-libs-1.20.7-6.el7.i686 |
+--------------------------------+

[mithrandie]

I confirmed to replicate this bug.
Please wait to fix.

[mithrandie]

This bug has been fixed and the fix is released as version 1.12.2.
Thank you for reporting.

[ken3]

Excellent work! Thank you.