diff options
| author | Tom Lane | 2020-04-12 18:03:24 +0000 |
|---|---|---|
| committer | Tom Lane | 2020-04-12 18:03:24 +0000 |
| commit | 88d934f0387a66ba372643913f99e845d0ea144a (patch) | |
| tree | 9f517164f9277b24fc43ac579d2631bf829236d5 | |
| parent | dbc60c5593f26dc777a3be032bff4fb4eab1ddd1 (diff) | |
Doc: introduce and document "&zwsp;" for allowing optional line breaks.
We already had a couple of places using zero-width spaces for formatting
hackery, and we're going to need more if we ever want the PDF manuals to
look decent. But please let's not write hard-coded Unicode escapes.
We can avoid that by using a custom entity, which also provides a place
to put a teeny bit of documentation about what it is and how to use it.
I'd previously posted a patch using "&break;" for this, but on reflection
that would be horrible to grep for. Instead let's use "&zwsp;", based
on the name of the Unicode symbol ("zero width space").
Discussion: https://postgr.es/m/9326.1581457869@sss.pgh.pa.us
| -rw-r--r-- | doc/src/sgml/func.sgml | 10 | ||||
| -rw-r--r-- | doc/src/sgml/postgres.sgml | 7 |
2 files changed, 12 insertions, 5 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 12d75b476f3..5e5bfddf7c5 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -2981,7 +2981,7 @@ SELECT format('Testing %3$s, %2$s, %s', 'one', 'two', 'three'); the result written in hexadecimal </entry> <entry><literal>md5('Th\000omas'::bytea)</literal></entry> - <entry><literal>8ab2d3c9689aaf18​b4958c334c82d8b1</literal></entry> + <entry><literal>8ab2d3c9689aaf18&zwsp;b4958c334c82d8b1</literal></entry> </row> <row> @@ -3032,7 +3032,7 @@ SELECT format('Testing %3$s, %2$s, %s', 'one', 'two', 'three'); SHA-224 <link linkend="functions-hash-note">hash</link> </entry> <entry><literal>sha224('abc'::bytea)</literal></entry> - <entry><literal>\x23097d223405d8228642a477bda2​55b32aadbce4bda0b3f7e36c9da7</literal></entry> + <entry><literal>\x23097d223405d8228642a477bda2&zwsp;55b32aadbce4bda0b3f7e36c9da7</literal></entry> </row> <row> @@ -3047,7 +3047,7 @@ SELECT format('Testing %3$s, %2$s, %s', 'one', 'two', 'three'); SHA-256 <link linkend="functions-hash-note">hash</link> </entry> <entry><literal>sha256('abc'::bytea)</literal></entry> - <entry><literal>\xba7816bf8f01cfea414140de5dae2223​b00361a396177a9cb410ff61f20015ad</literal></entry> + <entry><literal>\xba7816bf8f01cfea414140de5dae2223&zwsp;b00361a396177a9cb410ff61f20015ad</literal></entry> </row> <row> @@ -3062,7 +3062,7 @@ SELECT format('Testing %3$s, %2$s, %s', 'one', 'two', 'three'); SHA-384 <link linkend="functions-hash-note">hash</link> </entry> <entry><literal>sha384('abc'::bytea)</literal></entry> - <entry><literal>\xcb00753f45a35e8bb5a03d699ac65007​272c32ab0eded1631a8b605a43ff5bed​8086072ba1e7cc2358baeca134c825a7</literal></entry> + <entry><literal>\xcb00753f45a35e8bb5a03d699ac65007&zwsp;272c32ab0eded1631a8b605a43ff5bed&zwsp;8086072ba1e7cc2358baeca134c825a7</literal></entry> </row> <row> @@ -3077,7 +3077,7 @@ SELECT format('Testing %3$s, %2$s, %s', 'one', 'two', 'three'); SHA-512 <link linkend="functions-hash-note">hash</link> </entry> <entry><literal>sha512('abc'::bytea)</literal></entry> - <entry><literal>\xddaf35a193617abacc417349ae204131​12e6fa4e89a97ea20a9eeee64b55d39a​2192992a274fc1a836ba3c23a3feebbd​454d4423643ce80e2a9ac94fa54ca49f</literal></entry> + <entry><literal>\xddaf35a193617abacc417349ae204131&zwsp;12e6fa4e89a97ea20a9eeee64b55d39a&zwsp;2192992a274fc1a836ba3c23a3feebbd&zwsp;454d4423643ce80e2a9ac94fa54ca49f</literal></entry> </row> <row> diff --git a/doc/src/sgml/postgres.sgml b/doc/src/sgml/postgres.sgml index ba3d6261029..f4a3c7e5e7c 100644 --- a/doc/src/sgml/postgres.sgml +++ b/doc/src/sgml/postgres.sgml @@ -11,6 +11,13 @@ <!ENTITY reference SYSTEM "reference.sgml"> +<!-- +Zero-width space. Use this to allow line breaks at desirable places in +table cells, examples, etc. without causing an unwanted space when the +break is not needed in a wider output rendering. +--> +<!ENTITY zwsp "​"> + ]> <book id="postgres"> |