Merge pull request #1605 from davidweichiang/fix-1604

Stop custos from erroneously changing into clef

CHANGELOG.md

@@ -9,6 +9,7 @@ As of v3.0.0 this project adheres to [Semantic Versioning](http://semver.org/).
 - Fixed the interaction between hyphens and styles.  See [#1538](https://github.com/gregorio-project/gregorio/issues/1538).
 - Fixed the loss of ongoing styles when a syllable starts with a forced center.  See [#1551](https://github.com/gregorio-project/gregorio/issues/1551).
 - Fixed first syllables of one letter with a style causing a segfault.  See [#1585](https://github.com/gregorio-project/gregorio/issues/1585).
+- Fixed a bug that caused a custos to sometimes change into a clef. See [#1373](https://github.com/gregorio-project/gregorio/issues/1373).
 
 ### Changed
 - Defined an output directory for gtex and glog files.  Default is `tmp-gre`.  This can be changed using `\gresetoutputdir{...}`.  Fixes [#1393](https://github.com/gregorio-project/gregorio/issues/1393), [#1542](https://github.com/gregorio-project/gregorio/issues/1542), and [#1571](https://github.com/gregorio-project/gregorio/issues/1571).

tex/gregoriotex-signs.tex

@@ -215,7 +215,7 @@
 % sets \gre@box@temp@width with the clef, the arguments are the same as \gre@typeclef
 \def\gre@boxclef#1#2#3#4#5#6#7#8{%
   \gre@trace{gre@boxclef{#1}{#2}{#3}{#4}{#5}{#6}{#7}{#8}}%
-  \global\setbox\gre@box@temp@width=\hbox{%
+  \setbox\gre@box@temp@width=\hbox{%
     \ifcase#7%
       \gre@typesingleclef{#1}{#2}{#3}{#5}%
     \else %