| dnl @ ../doc/m4.texi:5744: Origin of test |
| dnl @ expected status: 0 |
| dnl @ extra options: |
| dnl @ Copyright (C) 2006, 2007, 2008, 2009 Free Software |
| dnl @ Foundation, Inc. |
| dnl @ This file is free software; the Free Software Foundation |
| dnl @ gives unlimited permission to copy and/or distribute it |
| dnl @ with or without modifications, as long as this notice |
| dnl @ is preserved. |
| regexp(`abc', `\(b\)', `\\\10\a') |
| dnl @result{}\b0a |
| regexp(`abc', `b', `\1\') |
| dnl @error{}m4:stdin:2: Warning: sub-expression 1 not present |
| dnl @error{}m4:stdin:2: Warning: trailing \ ignored in replacement |
| dnl @result{} |
| regexp(`abc', `\(\(d\)?\)\(c\)', `\1\2\3\4\5\6') |
| dnl @error{}m4:stdin:3: Warning: sub-expression 4 not present |
| dnl @error{}m4:stdin:3: Warning: sub-expression 5 not present |
| dnl @error{}m4:stdin:3: Warning: sub-expression 6 not present |
| dnl @result{}c |
