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echo empty lines

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readline doesn't echo empty lines (when not using a prompt),
so adjust bc to echo empty lines, which is very useful
to delimit interactive input
This commit is contained in:
Pádraig Brady 2021-08-14 13:48:12 +01:00
parent f0c7c363e3
commit c5e317aba0
2 changed files with 19 additions and 1 deletions
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14
bc-1.07.1-readline-echo-empty.diff Normal file
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@ -0,0 +1,14 @@
diff -Naur bc-1.07.1/bc/scan.l bc-1.07.1-new/bc/scan.l
--- bc-1.07.1/bc/scan.l 2017-04-07 22:20:02.000000000 +0000
+++ bc-1.07.1-new/bc/scan.l 2021-08-14 12:12:33.860991777 +0000
@@ -170,6 +170,10 @@
if (rl_len != 1)
add_history (rl_line);
rl_line[rl_len-1] = '\n';
+ /* readline doesn't echo empty lines without a prompt,
+ so do so here. */
+ if (rl_len == 1)
+ putchar ('\n');
fflush (stdout);
}

6
bc.spec
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@ -1,12 +1,13 @@
Summary: GNU's bc (a numeric processing language) and dc (a calculator)
Name: bc
Version: 1.07.1
Release: 13%{?dist}
Release: 14%{?dist}
License: GPLv2+
URL: http://www.gnu.org/software/bc/
Source: http://ftp.gnu.org/gnu/bc/bc-%{version}.tar.gz
Patch1: bc-1.06-dc_ibase.patch
Patch2: bc-1.06.95-doc.patch
Patch3: bc-1.07.1-readline-echo-empty.diff
BuildRequires: gcc
BuildRequires: readline-devel, flex, bison, texinfo, ed
BuildRequires: make
@ -40,6 +41,9 @@ rm -f $RPM_BUILD_ROOT/%{_infodir}/dir
%{_infodir}/*
%changelog
* Sat Aug 14 2021 Pádraig Brady <P@draigBrady.com> - 1.07.1-14
- Echo empty lines, useful for delimiting work
* Wed Jul 21 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.07.1-13
- Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild