POSIX chose I rather than i as the case-insensitive flag for s///, because apparently more seds support I than i. We're allegedly alone in only supporting i. (On the Mac, sed supports neither.)
Strictly this isn't *currently* in POSIX, but it's been accepted for issue 8. Bug: https://austingroupbugs.net/view.php?id=779#c2050 --- tests/sed.test | 2 ++ toys/posix/sed.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-)
From ddeea4c144934dbfd8633910f6dcd910df3d84b3 Mon Sep 17 00:00:00 2001 From: Elliott Hughes <[email protected]> Date: Fri, 27 Mar 2020 16:57:24 -0700 Subject: [PATCH] sed s///: support POSIX I as synonym for i POSIX chose I rather than i as the case-insensitive flag for s///, because apparently more seds support I than i. We're allegedly alone in only supporting i. (On the Mac, sed supports neither.) Strictly this isn't *currently* in POSIX, but it's been accepted for issue 8. Bug: https://austingroupbugs.net/view.php?id=779#c2050 --- tests/sed.test | 2 ++ toys/posix/sed.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/tests/sed.test b/tests/sed.test index 98c109ad..613330d3 100755 --- a/tests/sed.test +++ b/tests/sed.test @@ -188,4 +188,6 @@ testing 'megabyte s/x/y/g (5 sec timeout)' "timeout 5 sed 's/x/y/g' | sha1sum" \ '138c1fa7c3f64186203b0192fb4abdb33cb4e98a -\n' '' "$X\n" unset X Y +testing 's i and I' 'sed s/o/0/ig' "f00l F00L" "" "fool FOOL" + # -i with $ last line test diff --git a/toys/posix/sed.c b/toys/posix/sed.c index fa40dbf5..0896959f 100644 --- a/toys/posix/sed.c +++ b/toys/posix/sed.c @@ -143,7 +143,7 @@ config SED [0-9] A number, substitute only that occurrence of pattern g Global, substitute all occurrences of pattern - i Ignore case when matching + i/I Ignore case when matching p Print the line if match was found and replaced w [file] Write (append) line to file if match replaced @@ -897,6 +897,7 @@ resume_s: if (isspace(*line) && *line != '\n') continue; if (0 <= (l = stridx("igp", *line))) command->sflags |= 1<<l; + else if (*line == 'I') command->sflags |= 1<<0; else if (!(command->sflags>>3) && 0<(l = strtol(line, &line, 10))) { command->sflags |= l << 3; line--; -- 2.26.0.rc2.310.g2932bb562d-goog
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