diff options
Diffstat (limited to 'doc/context/sources/general/manuals/spacing/spacing-periods.tex')
| -rw-r--r-- | doc/context/sources/general/manuals/spacing/spacing-periods.tex | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/doc/context/sources/general/manuals/spacing/spacing-periods.tex b/doc/context/sources/general/manuals/spacing/spacing-periods.tex new file mode 100644 index 000000000..8d493b9a9 --- /dev/null +++ b/doc/context/sources/general/manuals/spacing/spacing-periods.tex @@ -0,0 +1,79 @@ +% language=uk + +\environment spacing-style + +\startcomponent spacing-periods + +\startchapter[title=Periods in abbreviations] + +% \enabletrackers[typesetters.periodkerns] + +When you use so called non french spacing you get more spacing after punctuation +(as determined by the \type {sfcode} of the punctuation character) . However, +when you use periods as delimiters for abbreviations, that period is not the end +of a sentence and you want normal interword spacing instead. One way to achieve +this is to add a backslash after the period but in an automated workflow where +the source is not coming from \TEX\ but for instance in \XML\ format, you can't +do that. The \type {\setupspacing} command can be used to set one of: + +\starttabulate[|T|p|] +\NC fixed \NC \showglyphs \frenchspacing bla bla e.g. some more \NC \NR +\NC packed \NC \showglyphs \newfrenchspacing bla bla e.g. some more \NC \NR +\NC broad \NC \showglyphs \nonfrenchspacing bla bla e.g. some more \NC \NR +\stoptabulate + +The \type {packed} case is similar to \type {fixed} but has slightly larger (some +5\percent) spacing after punctuation which (at least historically) avoids some +side effects with hyphenation and dashes. We default to \type {broad} anyway. + +The next examples demonstrate what the \type {\setperiodkerning} does when it gets +an option passed. Its counterpart is \type {\resetperiodkerning}. + +\starttabulate[|T|Tr|p|] + \HL + \NC \NC \NC \showglyphs \nonfrenchspacing \resetperiodkerning bla bla e.g. some more \NC \NR + \NC \NC \NC \showglyphs \nonfrenchspacing \resetperiodkerning bla bla e.g. Some more \NC \NR + \HL + \NC zerospaceperiods \NC 0 \NC \showglyphs \nonfrenchspacing \setperiodkerning [zerospaceperiods]bla bla e.g. some more \NC \NR + \NC \NC \NC \showglyphs \nonfrenchspacing \setperiodkerning [zerospaceperiods]bla bla e.g. Some more \NC \NR + \HL + \NC smallspaceperiods \NC .25\NC \showglyphs \nonfrenchspacing \setperiodkerning [smallspaceperiods]bla bla e.g. some more \NC \NR + \NC \NC \NC \showglyphs \nonfrenchspacing \setperiodkerning [smallspaceperiods]bla bla e.g. Some more \NC \NR + \HL + \NC halfspaceperiods \NC .50 \NC \showglyphs \nonfrenchspacing \setperiodkerning [halfspaceperiods]bla bla e.g. some more \NC \NR + \NC \NC \NC \showglyphs \nonfrenchspacing \setperiodkerning [halfspaceperiods]bla bla e.g. Some more \NC \NR + \HL +\stoptabulate + +Next we enlarge the affected bit of text so that you can see that the last two +options also affects the space after the periods that bind the characters. + +\startlinecorrection +\startcombination[4*2] + {\scale[scale=3500]{\ruledhbox{\showglyphs \nonfrenchspacing \resetperiodkerning e.g. s}}} {} + {\scale[scale=3500]{\ruledhbox{\showglyphs \nonfrenchspacing \setperiodkerning [zerospaceperiods]e.g. s}}} {} + {\scale[scale=3500]{\ruledhbox{\showglyphs \nonfrenchspacing \setperiodkerning [smallspaceperiods]e.g. s}}} {} + {\scale[scale=3500]{\ruledhbox{\showglyphs \nonfrenchspacing \setperiodkerning [halfspaceperiods]e.g. s}}} {} + {\scale[scale=3500]{\ruledhbox{\showglyphs \nonfrenchspacing \resetperiodkerning e.g. S}}} {} + {\scale[scale=3500]{\ruledhbox{\showglyphs \nonfrenchspacing \setperiodkerning [zerospaceperiods]e.g. S}}} {\ttxx zerospaceperiods} + {\scale[scale=3500]{\ruledhbox{\showglyphs \nonfrenchspacing \setperiodkerning [smallspaceperiods]e.g. S}}} {\ttxx smallspaceperiods} + {\scale[scale=3500]{\ruledhbox{\showglyphs \nonfrenchspacing \setperiodkerning [halfspaceperiods]e.g. S}}} {\ttxx halfspaceperiods} +\stopcombination +\stoplinecorrection + +Defining more options is easy, we only specify the factor that determines mid +periods. When \type {factor} is zero, only the final period is looked at. + +\starttyping +\defineperiodkerning [zerospaceperiods] [factor=0] +\defineperiodkerning [smallspaceperiods] [factor=.25] +\defineperiodkerning [halfspaceperiods] [factor=.5] +\stoptyping + +This mechanism has been present for a while but I forgot about it. When cleaning +up code it was decided to add it to the core. Maybe more options and features are +needed but so far there has never been demand for this so \unknown + +\stopchapter + +\stopcomponent |