Neil Puttock <n.putt...@gmail.com> writes:

> Very shapely parentheses. :)

Thank you, and thanks for the comments!  Here are two addenda
to the original patch that make the improvements you suggested:

commit 79259e82dea04bec0090152268ac8ec3ad12ff1f
Author: Thomas Morgan <t...@ziiuu.com>
Date:   Mon Jul 27 20:22:03 2009 -0400

    Make `parenthesize-stencil' a public procedure.
    In same procedure, use constant `RIGHT' instead of 1.

diff --git a/scm/stencil.scm b/scm/stencil.scm
index 5b83631..c35d45e 100644
--- a/scm/stencil.scm
+++ b/scm/stencil.scm
@@ -136,16 +136,16 @@ the more angular the shape of the parenthesis."
      x-extent
      y-extent)))
 
-(define (parenthesize-stencil
-        stencil half-thickness width angularity padding)
+(define-public (parenthesize-stencil
+               stencil half-thickness width angularity padding)
   "Add parentheses around @var{stencil}, returning a new stencil."
   (let* ((y-extent (ly:stencil-extent stencil Y))
         (lp (make-parenthesis-stencil
              y-extent half-thickness (- width) angularity))
         (rp (make-parenthesis-stencil
              y-extent half-thickness width angularity)))
-    (set! stencil (ly:stencil-combine-at-edge lp X 1 stencil padding))
-    (set! stencil (ly:stencil-combine-at-edge stencil X 1 rp padding))
+    (set! stencil (ly:stencil-combine-at-edge lp X RIGHT stencil padding))
+    (set! stencil (ly:stencil-combine-at-edge stencil X RIGHT rp padding))
     stencil))
 
 (define-public (make-line-stencil width startx starty endx endy)

commit a4b20dfb40475332e7d9fdcdf347c1d559412102
Author: Thomas Morgan <t...@ziiuu.com>
Date:   Mon Jul 27 20:48:02 2009 -0400

    Define property defaults in markup command `parenthesize'.
    
    Do not make `angularity' a grob property: remove it from
    `lily/script-interface.cc', `scm/define-grob-properties.scm',
    and `scm/define-grobs.scm'.

diff --git a/lily/script-interface.cc b/lily/script-interface.cc
index 6bdd069..59737b5 100644
--- a/lily/script-interface.cc
+++ b/lily/script-interface.cc
@@ -112,7 +112,6 @@ ADD_INTERFACE (Text_script,
 
               /* properties */
               "add-stem-support "
-              "angularity "
               "avoid-slur "
               "script-priority "
               "slur "
diff --git a/scm/define-grob-properties.scm b/scm/define-grob-properties.scm
index 0c13f82..ee75ee7 100644
--- a/scm/define-grob-properties.scm
+++ b/scm/define-grob-properties.scm
@@ -38,8 +38,6 @@ be created below this bar line.")
      (alteration ,number? "Alteration numbers for accidental.")
      (alteration-alist ,list? "List of @code{(@var{pitch}
 . @var{accidental})} pairs for key signature.")
-     (angularity ,number? "Angularity of grob shape.
-Typical values range from 0 (not angular) to 1 (angular).")
      (annotation ,string? "Annotate a grob for debug purposes.")
      (arpeggio-direction ,ly:dir? "If set, put an arrow on the
 arpeggio squiggly line.")
diff --git a/scm/define-grobs.scm b/scm/define-grobs.scm
index f829a33..e511f24 100644
--- a/scm/define-grobs.scm
+++ b/scm/define-grobs.scm
@@ -1889,7 +1889,6 @@
        (slur-padding . 0.5)
        (script-priority . 200)
        (cross-staff . ,ly:script-interface::calc-cross-staff)
-       (angularity . 0)
        ;; todo: add X self alignment?
        (meta . ((class . Item)
                 (interfaces . (text-script-interface
diff --git a/scm/define-markup-commands.scm b/scm/define-markup-commands.scm
index bbc2aec..10cc7fe 100644
--- a/scm/define-markup-commands.scm
+++ b/scm/define-markup-commands.scm
@@ -3025,7 +3025,11 @@ Draw vertical brackets around @var{arg}.
 (define-builtin-markup-command (parenthesize layout props arg)
   (markup?)
   graphic
-  ()
+  ((angularity 0)
+   (padding)
+   (size 1)
+   (thickness 1)
+   (width 0.25))
   "
 @cindex placing parentheses around text
   
@@ -3043,16 +3047,17 @@ a column containing several lines of text.
 }
 @end lilypond"
   (let* ((markup (interpret-markup layout props arg))
-        (size (chain-assoc-get 'size props 1))
-        (width (* size (chain-assoc-get 'width props 0.25)))
-        (thickness (* (chain-assoc-get 'line-thickness props 0.1)
-                      (chain-assoc-get 'thickness props 1)))
-        (half-thickness (min (* size 0.5 thickness)
-                             (* (/ 4 3.0) width)))
-        (angularity (chain-assoc-get 'angularity props 0))
+        (scaled-width (* size width))
+        (scaled-thickness
+         (* (chain-assoc-get 'line-thickness props 0.1)
+            thickness))
+        (half-thickness
+         (min (* size 0.5 scaled-thickness)
+              (* (/ 4 3.0) scaled-width)))
         (padding (chain-assoc-get 'padding props half-thickness)))
     (parenthesize-stencil
-     markup half-thickness width angularity padding)))
+     markup half-thickness scaled-width angularity padding)))
+
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; Delayed markup evaluation



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