Egof
To retrieve obscure syntax of languages, or bookmark code comments.
Facilitates retrieval of personalized comments previously put into code. While writing new, (or reviewing old) code, user adds search-tag (the string "EGOF") to comments. Subsequently running Egof (followed by optional search words) retrieves them.
Code can be in any programming language, or scripts used by applications, or HTML or LaTex files.
Sounds like a combination of Unix find/grep, but has many more features. Searching is faster since database files are created, one per language. When creating them Egof goes through all (or specified subset of) user's folders/files, finds instances of the search-tag, and stores those lines of code plus some surrounding code.
During running, Egof displays a prompt, and allows users to change options and modify the search, (using the same option-parsing software that was used to parse the command line.)
Egof is command-line based.
The documentation is comprehensive. Please invest <5 min to read the "Overview" section. Thank you.