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-rw-r--r--Etc/zsh-development-guide10
1 files changed, 10 insertions, 0 deletions
diff --git a/Etc/zsh-development-guide b/Etc/zsh-development-guide
index 793e2d255..f0a5ac80e 100644
--- a/Etc/zsh-development-guide
+++ b/Etc/zsh-development-guide
@@ -856,3 +856,13 @@ The following parameters are currently used:
   distribution, but that need to be present in the CVS tree.  This
   variable is not used by the zsh build process and is present for
   the convenience of external checks.
+
+Version Suffixes
+----------------
+The configure script reads the version number from Config/version.mk.
+If the environment variable ZSH_EXTRAVERSION is set, the string
+contained therein will be appended to the version string.  For example,
+if Config/version.mk contains "VERSION=4.3.4-dev-7" and
+ZSH_EXTRAVERSION is set to "-ca", $ZSH_VERSION in the shell built from
+that run will equal "4.3.4-dev-7-ca".  Caution is recommended when
+using this feature, as is-at-least may misunderstand your conventions.