https://github.com/libsdl-org/autoconf/commit/eea5092d161a8a58a1165a466581b9524a99b7c0
From eea5092d161a8a58a1165a466581b9524a99b7c0 Mon Sep 17 00:00:00 2001
From: Paul Eggert <[EMAIL REDACTED]>
Date: Fri, 18 Feb 2022 15:03:00 -0800
Subject: [PATCH] Fix unwanted globbing of sed script
Problem reported by mirabilos via Eric Blake in:
https://www.austingroupbugs.net/view.php?id=1558
https://lists.gnu.org/r/bug-autoconf/2022-02/msg00003.html
* lib/m4sugar/m4sh.m4 (_AS_TR_SH_PREPARE):
Define as_sed_sh as the sed script. All uses of as_tr_sh changed.
Define as_tr_sh as before, but only for compatibility with scripts
that mistakenly use as_tr_sh directly.
(AS_TR_CPP_PREPARE): Likewise for as_sed_cpp and as_tr_cpp.
---
lib/m4sugar/m4sh.m4 | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/lib/m4sugar/m4sh.m4 b/lib/m4sugar/m4sh.m4
index 6909012e..b2075315 100644
--- a/lib/m4sugar/m4sh.m4
+++ b/lib/m4sugar/m4sh.m4
@@ -1863,7 +1863,8 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
m4_defun([_AS_TR_SH_PREPARE],
[AS_REQUIRE([_AS_CR_PREPARE])]dnl
[# Sed expression to map a string onto a valid variable name.
-as_tr_sh="eval sed 'y%*+%pp%;s%[[^_$as_cr_alnum]]%_%g'"
+as_sed_sh="y%*+%pp%;s%[[^_$as_cr_alnum]]%_%g"
+as_tr_sh="eval sed '$as_sed_sh'" # deprecated
])
@@ -1871,7 +1872,7 @@ as_tr_sh="eval sed 'y%*+%pp%;s%[[^_$as_cr_alnum]]%_%g'"
# --------------------
# Transform EXPRESSION into a valid shell variable name.
# sh/m4 polymorphic.
-# Be sure to update the definition of '$as_tr_sh' if you change this.
+# Be sure to update the definition of '$as_sed_sh' if you change this.
#
# AS_LITERAL_IF guarantees that a literal does not have any nested quotes,
# once $1 is expanded. m4_translit silently uses only the first occurrence
@@ -1895,7 +1896,7 @@ m4_define([_AS_TR_SH_LITERAL],
[pp[]]]m4_dquote(m4_for(,1,255,,[[_]]))[)])
m4_define([_AS_TR_SH_INDIR],
-[`AS_ECHO(["_AS_ESCAPE([[$1]], [`], [\])"]) | $as_tr_sh`])
+[`AS_ECHO(["_AS_ESCAPE([[$1]], [`], [\])"]) | sed "$as_sed_sh"`])
# _AS_TR_CPP_PREPARE
@@ -1903,7 +1904,8 @@ m4_define([_AS_TR_SH_INDIR],
m4_defun([_AS_TR_CPP_PREPARE],
[AS_REQUIRE([_AS_CR_PREPARE])]dnl
[# Sed expression to map a string onto a valid CPP name.
-as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[[^_$as_cr_alnum]]%_%g'"
+as_sed_cpp="y%*$as_cr_letters%P$as_cr_LETTERS%;s%[[^_$as_cr_alnum]]%_%g"
+as_tr_cpp="eval sed '$as_sed_cpp'" # deprecated
])
@@ -1911,7 +1913,7 @@ as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[[^_$as_cr_alnum]]%_%g
# ---------------------
# Map EXPRESSION to an upper case string which is valid as rhs for a
# '#define'. sh/m4 polymorphic. Be sure to update the definition
-# of '$as_tr_cpp' if you change this.
+# of '$as_sed_cpp' if you change this.
#
# See implementation comments in AS_TR_SH.
m4_defun_init([AS_TR_CPP],
@@ -1928,7 +1930,7 @@ m4_define([_AS_TR_CPP_LITERAL],
[P[]]]m4_dquote(m4_defn([m4_cr_LETTERS])m4_for(,1,255,,[[_]]))[)])
m4_define([_AS_TR_CPP_INDIR],
-[`AS_ECHO(["_AS_ESCAPE([[$1]], [`], [\])"]) | $as_tr_cpp`])
+[`AS_ECHO(["_AS_ESCAPE([[$1]], [`], [\])"]) | sed "$as_sed_cpp"`])
# _AS_TR_PREPARE