Re: regexp curly braces do not work

2020-07-30 Thread Eric Blake
On 7/30/20 1:24 AM, Hyunho Cho wrote: m4 (GNU M4) 1.4.18 Operating System: Ubuntu 20.04 LTS Kernel: Linux 5.4.0-33-generic Architecture: x86-64 sh$ m4 <<\@ patsubst(`hello', `ll', `XX') patsubst(`hello', `l+', `XX') patsubst(`hello', `l\{2\}', `XX') patsubst(`hello', `l{2}', `XX') @ heXXo heXXo

regexp curly braces do not work

2020-07-29 Thread Hyunho Cho
m4 (GNU M4) 1.4.18 Operating System: Ubuntu 20.04 LTS Kernel: Linux 5.4.0-33-generic Architecture: x86-64 sh$ m4 <<\@ patsubst(`hello', `ll', `XX') patsubst(`hello', `l+', `XX') patsubst(`hello', `l\{2\}', `XX') patsubst(`hello', `l{2}', `XX') @ heXXo heXXo hello hello