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+++ TODO
@@ -1,8 +1,6 @@
-- add man/adapt-tst.1
 - add option -f to read a list of paths from a file (possibly stdin)
 - add option -l to list the test files found
 - move tests/helpers to the top level?
-- organize tests/lang/c into directories
 - add test(s) for -j?
 - add test.sh that closely follows test.h (TST for shell scripts)
 - extend qputs to color down into further quote levels? (". . . >")
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--- man/exercise.1
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@@ -1,4 +1,4 @@
-.Dd July 23, 2025
+.Dd August 10, 2025
 .Dt EXERCISE 1
 .Os
 .
@@ -280,8 +280,8 @@ Note the use of (shell) single quotes to embed the nec
 double quotes.
 .
 .Sh SEE ALSO
-.Xr sh 1 ,
-.Xr test.h 3
+.Xr adapt-tst 1 ,
+.Xr test.h 5
 .
 .Sh AUTHORS
 .An Sven M. Hallberg Aq Mt pesco@khjk.org
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+++ man/adapt-tst.1
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+.Dd August 10, 2025
+.Dt ADAPT-TST 1
+.Os
+.
+.Sh NAME
+.Nm adapt-tst
+.Nd using terribly simple test suites with exercise
+.
+.Sh SYNOPSIS
+.Nm adapt-tst
+.Ar command
+.Op Fl knvx
+.Op Ar argument ...
+.
+.Sh DESCRIPTION
+The
+.Nm
+script executes
+.Ar command
+and interprets its standard output in the simple format used by
+.Xr test.h 5 .
+It then produces status report lines as expected by
+.Xr exercise 1 .
+Thus it allows
+.Dq terribly simple test
+programs to be called as test suites from
+.Cm exercise .
+.Pp
+The options match their
+.Xr exercise 1
+counterparts and are as follows:
+.Bl -tag -width Ds
+.It Fl k
+Keep going after a failed test.
+This sets the
+.Ev K
+environment variable for
+.Ar command .
+.It Fl n
+Dry run.
+Do not run tests, only report their number.
+.It Fl v
+Verbose.
+If used with
+.Fl n ,
+also print the names of the tests.
+If given twice, this sets the
+.Ev V
+environment variable for
+.Ar command .
+.It Fl x
+Exit after a failed test;
+this is the default.
+If given twice, this sets the
+.Ev X
+environment variable for
+.Ar command
+to cause an exit immediately after any non-fatal failure.
+.El
+.
+.Sh EXIT STATUS
+The
+.Nm
+utility exits 0 if all tests succeed, and 1 otherwise.
+.
+.Sh EXAMPLES
+Given a test executable
+.Pa foo.tst
+(built from
+.Pa foo.tst.c ,
+say)
+and assuming
+.Pa adapt-tst
+is in the same directory,
+create the following script as
+.Pa foo.ts :
+.Bd -literal -offset Ds
+#!/bin/sh
+exec ./adapt-tst ./foo.tst "$@"
+.Ed
+.
+.Sh SEE ALSO
+.Xr exercise 1 ,
+.Xr test.h 5
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--- support/adapt-tst
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@@ -2,15 +2,6 @@
 #
 # This script adapts a test suite that exposes the simple report protocol of
 # test.h for use with exercise.
-#
-# Usage: adapt-tst cmd [-nv] [arg ...]
-#
-# Example: Given a test suite in 'foo.tst.c' that is built into an executable
-# 'foo.tst', create the script 'foo.ts' containing the following:
-#
-#    #!/bin/sh
-#    exec ./adapt-tst ./foo.tst "$@"
-#
 
 cmd="$1"
 shift