Similar to \[is], the square root glyph (\[sr]) and the square root

extension glyph (\[radicalex]) are now text symbols.  The new
mathematical versions are called \[sqrt] and \[sqrtex],
respectively.

* font/devX*/S: Regenerated.
* font/devdvi/generate/texex.map: Rename `sr[0123]' to `sqrt[0123]'.
* font/devdvi/generate/texsy.map: Rename `sr' to `sqrt'.
* font/devdvi/EX, font/devdvi/S: Regenerated.
* font/devhtml/R.proto, font/devutf8/R.proto: Add `sqrt'.
* font/devlj4/generate/special.map: Add `sqrt'.
* font/devlj4/S: Regenerated.
* font/devps/generate/textmap: Add `sqrt'.
* font/devps/S, font/devps/symbolmap: Regenerated.

* src/preproc/eqn/sqrt.cc (SQRT_CHAR, RADICAL_EXTENSION_CHAR,
SQRT_CHAIN, BAR_CHAIN): Use `sqrt*' and `sqrtex*'.
* src/roff/troff/input.cc (init_charset_table): Make `sqrtex'
overlap horizontally.

* tmac/X.tmac, tmac/ps.tmac, tmac/lj4.tmac: Add `sqrtex'.
* tmac/dvi.tmac: Add `sr', and `sqrtex'.
Fix `radicalex'.

* doc/groff.texinfo, man/groff_diff.man: Document that `radicalex'
and `sqrtex' are overlapping glyphs.

15 files changed, 21 insertions, 10 deletions

diff --git a/font/devX100-12/S b/font/devX100-12/S
index f64f1574..c898a48e 100644
--- a/font/devX100-12/S
+++ b/font/devX100-12/S
@@ -165,6 +165,7 @@ co	13,11	0	0323
 tm	14,11	0	0324
 ---	13,13,2	0	0325
 sr	9,13,3	0	0326
+sqrt	"
 md	4,5	0	0327
 no	12,5	0	0330
 AN	10,8	0	0331
diff --git a/font/devX100/S b/font/devX100/S
index 65916e2b..ebf37c98 100644
--- a/font/devX100/S
+++ b/font/devX100/S
@@ -165,6 +165,7 @@ co	12,10	0	0323
 tm	11,10	0	0324
 ---	12,11,1	0	0325
 sr	8,12	0	0326
+sqrt	"
 md	4,5	0	0327
 no	10,5	0	0330
 AN	9,7	0	0331
diff --git a/font/devX75-12/S b/font/devX75-12/S
index 198b4bb8..ad70dc6f 100644
--- a/font/devX75-12/S
+++ b/font/devX75-12/S
@@ -165,6 +165,7 @@ co	10,9	0	0323
 tm	11,9	0	0324
 ---	10,10,1	0	0325
 sr	7,12	0	0326
+sqrt	"
 md	3,4	0	0327
 no	9,4	0	0330
 AN	8,6	0	0331
diff --git a/font/devX75/S b/font/devX75/S
index e55e6f00..324bb42c 100644
--- a/font/devX75/S
+++ b/font/devX75/S
@@ -165,6 +165,7 @@ co	8,7,1	0	0323
 tm	10,7	0	0324
 ---	9,8,1	0	0325
 sr	6,10	0	0326
+sqrt	"
 md	3,3	0	0327
 no	7,3	0	0330
 AN	6,5	0	0331
diff --git a/font/devdvi/EX b/font/devdvi/EX
index 5c8b8eb5..a4109845 100644
--- a/font/devdvi/EX
+++ b/font/devdvi/EX
@@ -125,10 +125,10 @@ ceilingleft1	553418,41942,1845514	1	0154
 ceilingright1	553418,41942,1845514	1	0155
 braceleft1	699053,41942,1845514	1	0156
 braceright1	699053,41942,1845514	1	0157
-sr0	1048579,41942,1216362	1	0160
-sr1	1048579,41942,1845514	1	0161
-sr2	1048579,41942,2474666	1	0162
-sr3	1048579,41942,3103818	1	0163
+sqrt0	1048579,41942,1216362	1	0160
+sqrt1	1048579,41942,1845514	1	0161
+sqrt2	1048579,41942,2474666	1	0162
+sqrt3	1048579,41942,3103818	1	0163
 ---	1106834,0,1887456	1	0164
 ---	1106834,0,629152	1	0165
 ---	1106834,41942,587210	1	0166
diff --git a/font/devdvi/S b/font/devdvi/S
index 69485957..ce36fadb 100644
--- a/font/devdvi/S
+++ b/font/devdvi/S
@@ -131,7 +131,7 @@ vA	640798,786432,262144	3	0155
 rs	524290,786432,262144	3	0156
 \	"
 ---	291272,728178,203888	3	0157
-sr	873816,41942,1006634	1	0160
+sqrt	873816,41942,1006634	1	0160
 ---	786434,716526	2	0161
 gr	873816,716526	2	0162
 is	436909,728178,203890,116509	3	0163
diff --git a/font/devdvi/generate/texex.map b/font/devdvi/generate/texex.map
index 081d2cb8..2e497f79 100644
--- a/font/devdvi/generate/texex.map
+++ b/font/devdvi/generate/texex.map
@@ -89,10 +89,10 @@
 109 ceilingright1
 110 braceleft1
 111 braceright1
-112 sr0
-113 sr1
-114 sr2
-115 sr3
+112 sqrt0
+113 sqrt1
+114 sqrt2
+115 sqrt3
 119 arrowvertdblex 
 120 arrowverttp 
 121 arrowvertbt
diff --git a/font/devdvi/generate/texsy.map b/font/devdvi/generate/texsy.map
index d3a427d1..fadd60ff 100644
--- a/font/devdvi/generate/texsy.map
+++ b/font/devdvi/generate/texsy.map
@@ -88,7 +88,7 @@
 108 va
 109 vA
 110 \ rs
-112 sr
+112 sqrt
 114 gr
 115 is
 120 sc
diff --git a/font/devhtml/R.proto b/font/devhtml/R.proto
index c1b376e7..bc6da8c1 100644
--- a/font/devhtml/R.proto
+++ b/font/devhtml/R.proto
@@ -349,6 +349,7 @@ mi	"
 -+	24	0	0x2213	∓
 **	24	0	0x2217	∗
 sr	24	0	0x221A	√
+sqrt	"
 pt	24	0	0x221D	∝
 if	24	0	0x221E	∞
 /_	24	0	0x2220	∠
diff --git a/font/devlj4/S b/font/devlj4/S
index d2bc46c4..1453442a 100644
--- a/font/devlj4/S
+++ b/font/devlj4/S
@@ -65,6 +65,7 @@ ca	26346,16650	0	69046
 ~=	"
 md	8781,10407	0	69066
 sr	19029,23322	2	68897
+sqrt	"
 pt	26346,12723	0	68902
 +e	11709,12705,555	0	68923
 tf	26346,16545	0	68928
diff --git a/font/devlj4/generate/special.map b/font/devlj4/generate/special.map
index 7fae6868..466b5a25 100644
--- a/font/devlj4/generate/special.map
+++ b/font/devlj4/generate/special.map
@@ -39,6 +39,7 @@
 301 ~=
 302 md
 500 sr
+500 sqrt
 501 pt
 503 +e
 504 3d
diff --git a/font/devps/S b/font/devps/S
index a2416b8f..97ce6bf3 100644
--- a/font/devps/S
+++ b/font/devps/S
@@ -170,6 +170,7 @@ gr	713,718,19,0,-36	3	0321	-- gradient
 ---	890,673,0,0,-18	3	0324	-- trademarkserif
 product	823,751,101,0,-25	3	0325	-- product
 sr	549,917,38,0,-10	3	0326	-- radical
+sqrt	"
 md	250,310,0,0,-69	3	0327	-- dotmath
 no	713,288,0,0,-15	3	0330	-- logicalnot
 AN	603,454,0,0,-23	3	0331	-- logicaland
diff --git a/font/devps/generate/textmap b/font/devps/generate/textmap
index f69a9a05..26c482f2 100644
--- a/font/devps/generate/textmap
+++ b/font/devps/generate/textmap
@@ -348,6 +348,7 @@ bracketrighttp bracketrighttp
 bracketrightbt bracketrightbt
 bracketrightex bracketrightex
 radical sr
+radical sqrt
 radicalex radicalex
 approxequal ~=
 bracketlefttp lc
diff --git a/font/devps/symbolmap b/font/devps/symbolmap
index d25e1e65..842fcd82 100644
--- a/font/devps/symbolmap
+++ b/font/devps/symbolmap
@@ -351,6 +351,7 @@ bracketrighttp bracketrighttp
 bracketrightbt bracketrightbt
 bracketrightex bracketrightex
 radical sr
+radical sqrt
 radicalex radicalex
 approxequal ~=
 bracketlefttp lc
diff --git a/font/devutf8/R.proto b/font/devutf8/R.proto
index 3bebeec7..5e3c4677 100644
--- a/font/devutf8/R.proto
+++ b/font/devutf8/R.proto
@@ -351,6 +351,7 @@ mi	"
 -+	24	0	0x2213
 **	24	0	0x2217
 sr	24	0	0x221A
+sqrt	"
 pt	24	0	0x221D
 if	24	0	0x221E
 /_	24	0	0x2220