Detail special environments for individual programs.

CWEB -- both the original DEK variant and this TL extension including
CTWILL -- and CTIE use the CWEBINPUTS environment.  This might lead to
conflicts between various settings.  (Classical DEK CWEB does not
support multiple, colon-separated path entries.)  In TeX Live, special
variants of CWEBINPUTS can be used for different applications.

The same is true for WEB -- both DEK and TL -- and TIE, which all use
WEBINPUTS by default.  Here also, application-specific extensions are
available in TeX Live.

git-svn-id: svn://tug.org/texlive/trunk@55477 c570f23f-e606-0410-a88d-b1316a301751

5 files changed, 25 insertions, 6 deletions

diff --git a/Build/source/texk/web2c/man/ChangeLog b/Build/source/texk/web2c/man/ChangeLog
index c9cdc8c8fc9..37f6a4c570d 100644
--- a/Build/source/texk/web2c/man/ChangeLog
+++ b/Build/source/texk/web2c/man/ChangeLog
@@ -1,3 +1,10 @@
+2020-06-08  Andreas Scherer  <https://ascherer.github.io>
+
+	* ctie.man,
+	* ctwill.man,
+	* cweb.man,
+	* tie.man: Detail special environments for individual programs.
+
 2020-06-06  Andreas Scherer  <https://ascherer.github.io>
 
 	* tex.man: Complete sentence about TEXINPUTS environment.
diff --git a/Build/source/texk/web2c/man/ctie.man b/Build/source/texk/web2c/man/ctie.man
index cfa64ddd51f..82284edf29e 100644
--- a/Build/source/texk/web2c/man/ctie.man
+++ b/Build/source/texk/web2c/man/ctie.man
@@ -1,4 +1,4 @@
-.TH CTIE 1 "7 April 2010" "Web2C @VERSION@"
+.TH CTIE 1 "8 June 2020" "Web2C @VERSION@"
 .\"=====================================================================
 .SH NAME
 ctie \- merge or apply CWEB change files
@@ -45,6 +45,9 @@ The environment variable CWEBINPUTS is used to search for the input files,
 or the system default if CWEBINPUTS is not set.  See
 .BR tex (1)
 for the details of the searching.
+To avoid conflicts with other programs that also use the CWEBINPUTS
+environment, you can be more specific and use CWEBINPUTS_ctie for
+special requirements in CTIE.
 .\"=====================================================================
 .SH "SEE ALSO"
 .BR cweb (1),
diff --git a/Build/source/texk/web2c/man/ctwill.man b/Build/source/texk/web2c/man/ctwill.man
index 95f4d4fbfb1..38b645436ed 100644
--- a/Build/source/texk/web2c/man/ctwill.man
+++ b/Build/source/texk/web2c/man/ctwill.man
@@ -1,6 +1,6 @@
 .\" Automatically generated by Pandoc 2.9.2.1
 .\"
-.TH "CTWILL" "1" "March 30, 2020" "Web2c @VERSION@" "General Commands Manual"
+.TH "CTWILL" "1" "June 08, 2020" "Web2c @VERSION@" "General Commands Manual"
 .hy
 .SH NAME
 .PP
@@ -127,7 +127,7 @@ captions for German (\f[B]+ld\f[R]).
 \f[B]--verbose\f[R] option to get the original behavior.
 .IP \[bu] 2
 File lookup with the environment variable CWEBINPUTS is extended to
-permit several, colon-separated, paths.
+permit several, colon-separated, paths; see ENVIRONMENT below.
 .IP \[bu] 2
 If properly configured, the main program \f[B]ctwill\f[R] is localized
 with the \[lq]GNU gettext utilities\[rq].
@@ -182,6 +182,9 @@ output
 The environment variable CWEBINPUTS is used to search for the input
 files, or the system default if CWEBINPUTS is not set.
 See tex(1) for the details of the searching.
+To avoid conflicts with other programs that also use the CWEBINPUTS
+environment, you can be more specific and use CWEBINPUTS_cweb for
+special requirements in CWEB.
 .PP
 If prepared for NLS support, \f[B]ctwill\f[R] like \f[B]ctangle\f[R] and
 \f[B]cweave\f[R] uses the environment variable TEXMFLOCALEDIR to
diff --git a/Build/source/texk/web2c/man/cweb.man b/Build/source/texk/web2c/man/cweb.man
index 6632ebe9386..1bd93662a98 100644
--- a/Build/source/texk/web2c/man/cweb.man
+++ b/Build/source/texk/web2c/man/cweb.man
@@ -1,6 +1,6 @@
 .\" Automatically generated by Pandoc 2.9.2.1
 .\"
-.TH "CWEB" "1" "March 30, 2020" "Web2c @VERSION@" "General Commands Manual"
+.TH "CWEB" "1" "June 08, 2020" "Web2c @VERSION@" "General Commands Manual"
 .hy
 .SH NAME
 .PP
@@ -66,7 +66,7 @@ CWEB in TeX\ Live operates silently by default (as of 2019); use the
 \f[B]--verbose\f[R] option to get the original behavior.
 .IP \[bu] 2
 File lookup with the environment variable CWEBINPUTS is extended to
-permit several, colon-separated, paths.
+permit several, colon-separated, paths; see ENVIRONMENT below.
 .IP \[bu] 2
 If properly configured, the main programs \f[B]ctangle\f[R] and
 \f[B]cweave\f[R] are localized with the \[lq]GNU gettext utilities\[rq].
@@ -123,6 +123,9 @@ output
 The environment variable CWEBINPUTS is used to search for the input
 files, or the system default if CWEBINPUTS is not set.
 See tex(1) for the details of the searching.
+To avoid conflicts with other programs that also use the CWEBINPUTS
+environment, you can be more specific and use CWEBINPUTS_cweb for
+special requirements in CWEB.
 .PP
 If prepared for NLS support, \f[B]ctangle\f[R] and \f[B]cweave\f[R] use
 the environment variable TEXMFLOCALEDIR to configure the parent
diff --git a/Build/source/texk/web2c/man/tie.man b/Build/source/texk/web2c/man/tie.man
index 06541756265..7be5044677b 100644
--- a/Build/source/texk/web2c/man/tie.man
+++ b/Build/source/texk/web2c/man/tie.man
@@ -1,4 +1,4 @@
-.TH TIE 1 "7 April 2010" "Web2C @VERSION@"
+.TH TIE 1 "8 June 2020" "Web2C @VERSION@"
 .\"=====================================================================
 .SH NAME
 tie \- merge or apply WEB change files
@@ -41,6 +41,9 @@ The environment variable WEBINPUTS is used to search for the input files,
 or the system default if WEBINPUTS is not set.  See
 .BR tex (1)
 for the details of the searching.
+To avoid conflicts with other programs that also use the WEBINPUTS
+environment, you can be more specific and use WEBINPUTS_tie for
+special requirements in TIE.
 .\"=====================================================================
 .SH "SEE ALSO"
 .BR web (1),