[me]: Internationalize strings.

* tmac/e.tmac (initialization): Introduce internal `_mo1`..`_mo12`,
  `_dw1`..`_dw7`, and `_td_format` strings (with English defaults).
  Define them outside of the new `ld` macro so that they can be
  overriden by localization packages.

  (ld) <dw, mo, td>: Populate via the above new strings.

* tmac/trans.tmac: Stop defining `mo` and `dw`.  Instead, make them
  aliases of the new strings above.   Handle `wa` and `wc` similarly.

This commit provokes a warning when the `meintro_fr.me` is processed:
	warning: macro 'french-appendix_string' not defined

(It causes no changes to the rendered output because chapter and
appendix headings are not used, nor is the `td` string.)

This will be fixed in the next commit.

3 files changed, 58 insertions, 42 deletions

diff --git a/ChangeLog b/ChangeLog
index 1eabaaaed..7d3f08565 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2021-12-27  G. Branden Robinson <g.branden.robinson@gmail.com>
+
+	[me]: Internationalize strings.
+
+	* tmac/e.tmac (initialization): Introduce internal
+	`_mo1`..`_mo12`, `_dw1`..`_dw7`, and `_td_format` strings (with
+	English defaults).  Define them outside of the new `ld` macro so
+	that they can be overriden by localization packages.
+	(ld) <dw, mo, td>: Populate via the above new strings.
+	* tmac/trans.tmac: Stop defining `mo` and `dw`.  Instead, make
+	them aliases of the new strings above.   Handle `wa` and `wc`
+	similarly.
+
 2021-12-26  G. Branden Robinson <g.branden.robinson@gmail.com>
 
 	[me]: Add `ld` macro to re-init date/l10n stuff.
diff --git a/tmac/e.tmac b/tmac/e.tmac
index 94ac8bf89..1221fccb5 100644
--- a/tmac/e.tmac
+++ b/tmac/e.tmac
@@ -1945,37 +1945,38 @@
 ..
 .
 .\"		*** DATE AND LOCALIZATION ***
-.
-.de ld			\" *** (re-)initialize date and localization
 .ds wa Appendix\"
 .ds wc Chapter\"
+.do ds _mo1 January\"
+.do ds _mo2 February\"
+.do ds _mo3 March\"
+.do ds _mo4 April\"
+.do ds _mo5 May\"
+.do ds _mo6 June\"
+.do ds _mo7 July\"
+.do ds _mo8 August\"
+.do ds _mo9 September\"
+.do ds _mo10 October\"
+.do ds _mo11 November\"
+.do ds _mo12 December\"
+.do ds _dw1 Sunday\"
+.do ds _dw2 Monday\"
+.do ds _dw3 Tuesday\"
+.do ds _dw4 Wednesday\"
+.do ds _dw5 Thursday\"
+.do ds _dw6 Friday\"
+.do ds _dw7 Saturday\"
+.do ds _td_format \\*(mo \\n(dy, \\n(y4\"
 .
+.de ld			\" *** (re-)initialize date and localization
 .\" Work around troff `yr` register's y2k problem.
 .nr y2 \\n(yr%100
 .af y2 00
 .nr y4 \\n(yr+1900
 .
-.if \\n(mo=1 .ds mo January\"
-.if \\n(mo=2 .ds mo February\"
-.if \\n(mo=3 .ds mo March\"
-.if \\n(mo=4 .ds mo April\"
-.if \\n(mo=5 .ds mo May\"
-.if \\n(mo=6 .ds mo June\"
-.if \\n(mo=7 .ds mo July\"
-.if \\n(mo=8 .ds mo August\"
-.if \\n(mo=9 .ds mo September\"
-.if \\n(mo=10 .ds mo October\"
-.if \\n(mo=11 .ds mo November\"
-.if \\n(mo=12 .ds mo December\"
-.if \\n(dw=1 .ds dw Sunday\"
-.if \\n(dw=2 .ds dw Monday\"
-.if \\n(dw=3 .ds dw Tuesday\"
-.if \\n(dw=4 .ds dw Wednesday\"
-.if \\n(dw=5 .ds dw Thursday\"
-.if \\n(dw=6 .ds dw Friday\"
-.if \\n(dw=7 .ds dw Saturday\"
-.
-.ds td \\*(mo \\n(dy, \\n(y4\"
+.do ds dw \\*[_dw\\n(dw]
+.do ds mo \\*[_mo\\n(mo]
+.do ds td \\*[_td_format]
 ..
 .
 .ld
diff --git a/tmac/trans.tmac b/tmac/trans.tmac
index f79d7ed57..cab86624d 100644
--- a/tmac/trans.tmac
+++ b/tmac/trans.tmac
@@ -105,25 +105,27 @@
 .
 .\" me package
 .if d @R \{\
-.	if \n[dw]=1 .als dw \*[locale]-sunday
-.	if \n[dw]=2 .als dw \*[locale]-monday
-.	if \n[dw]=3 .als dw \*[locale]-tuesday
-.	if \n[dw]=4 .als dw \*[locale]-wednesday
-.	if \n[dw]=5 .als dw \*[locale]-thursday
-.	if \n[dw]=6 .als dw \*[locale]-friday
-.	if \n[dw]=7 .als dw \*[locale]-saturday
-.	if \n[mo]=1 .als mo \*[locale]-january
-.	if \n[mo]=2 .als mo \*[locale]-february
-.	if \n[mo]=3 .als mo \*[locale]-march
-.	if \n[mo]=4 .als mo \*[locale]-april
-.	if \n[mo]=5 .als mo \*[locale]-may
-.	if \n[mo]=6 .als mo \*[locale]-june
-.	if \n[mo]=7 .als mo \*[locale]-july
-.	if \n[mo]=8 .als mo \*[locale]-august
-.	if \n[mo]=9 .als mo \*[locale]-september
-.	if \n[mo]=10 .als mo \*[locale]-october
-.	if \n[mo]=11 .als mo \*[locale]-november
-.	if \n[mo]=12 .als mo \*[locale]-december
+.	als wa \*[locale]-appendix_string
+.	als wc \*[locale]-chapter_string
+.	als _dw1 \*[locale]-sunday
+.	als _dw2 \*[locale]-monday
+.	als _dw3 \*[locale]-tuesday
+.	als _dw4 \*[locale]-wednesday
+.	als _dw5 \*[locale]-thursday
+.	als _dw6 \*[locale]-friday
+.	als _dw7 \*[locale]-saturday
+.	als _mo1 \*[locale]-january
+.	als _mo2 \*[locale]-february
+.	als _mo3 \*[locale]-march
+.	als _mo4 \*[locale]-april
+.	als _mo5 \*[locale]-may
+.	als _mo6 \*[locale]-june
+.	als _mo7 \*[locale]-july
+.	als _mo8 \*[locale]-august
+.	als _mo9 \*[locale]-september
+.	als _mo10 \*[locale]-october
+.	als _mo11 \*[locale]-november
+.	als _mo12 \*[locale]-december
 .\}
 .
 .\" mom package