make/tests/scripts/variables
Paul Smith bf7f690202 Directly handle $\ line endings
Previously we used the fact that this line ending expanded to "$ "
which would then expand to the empty string.  This has problems if
you enable warnings for undefined variables, so directly implement
this special (but documented) trick in the GNU Make parser.

As a side-effect this also removes all previous whitespace when
in GNU Make mode (not in POSIX mode) just as it would without "$".

* src/misc.c (collapse_continuations): Check for "$\" and remove it.
* tests/scripts/variables/flavors: Add regression tests including
with previous whitespace, and escaped/unescaped "$"
2023-02-26 17:30:15 -05:00
..
automatic [SV 62324] Simplify set_file_variables by passing in the stem 2022-04-24 10:39:32 -04:00
CURDIR Refresh the test suite framework implementation. 2019-09-16 08:25:33 -04:00
DEFAULT_GOAL Convert all "`'" quotes to "''" per new GNU Coding Standard guidelines. 2012-03-04 00:24:20 +00:00
define Add support for the POSIX :::= assignment operator. 2021-09-20 00:29:31 -04:00
EXTRA_PREREQS Support the .EXTRA_PREREQS special variable 2020-01-03 02:08:59 -05:00
flavors Directly handle $\ line endings 2023-02-26 17:30:15 -05:00
GNUMAKEFLAGS Don't add GNUMAKEFLAGS to the environment 2022-06-19 14:35:27 -04:00
INCLUDE_DIRS tests [WINDOWS32]: Support Strawberry Perl on Windows 2022-12-20 02:14:18 -05:00
LIBPATTERNS Convert all "`'" quotes to "''" per new GNU Coding Standard guidelines. 2012-03-04 00:24:20 +00:00
MAKE Convert all "`'" quotes to "''" per new GNU Coding Standard guidelines. 2012-03-04 00:24:20 +00:00
MAKE_RESTARTS * tests/scripts/variables/MAKE_RESTARTS: Remove TAB chars 2022-02-27 18:01:13 -05:00
MAKECMDGOALS * A few script fixes and updates for 3.78. 1999-09-17 03:15:37 +00:00
MAKEFILES Add test suite support to Windows 2017-06-04 18:37:20 -04:00
MAKEFLAGS * tests/scripts/variables/MAKEFLAGS: Fix some Perl warnings 2023-02-04 13:12:32 -05:00
MAKELEVEL Fix for bug #1276: Handle SHELL according to POSIX requirements. 2004-11-28 23:11:23 +00:00
MFILE_LIST [SV 50823] Support filenames containing '$' in MAKEFILE_LIST 2017-06-04 18:37:21 -04:00
negative Directly handle $\ line endings 2023-02-26 17:30:15 -05:00
private [SV 61463] Don't export inherited private variables 2023-01-02 23:02:33 -05:00
SHELL [SV 62654] Support GNU Make on z/OS 2023-01-08 10:45:38 -05:00
special Convert references from "GNU make" to "GNU Make" 2023-01-01 17:05:12 -05:00
undefine [SV 59870] define/undefine prerequisites are not target-specific vars 2021-03-14 16:35:38 -04:00